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  Subjects -> PHYSICS (Total: 797 journals)
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PHYSICS (573 journals)

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Journal Cover Physical Review X
  [SJR: 5.04]   [H-I: 38]   [10 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Online) 2160-3308
   Published by APS Homepage  [11 journals]
  • Demonstration of Efficient Nonreciprocity in a Microwave Optomechanical
           Circuit

    • Authors: G. A. Peterson; F. Lecocq, K. Cicak, R. W. Simmonds, J. Aumentado, J. D. Teufel
      First page: 031001
      Abstract: Author(s): G. A. Peterson, F. Lecocq, K. Cicak, R. W. Simmonds, J. Aumentado, and J. D. Teufel
      Nonreciprocal devices, in which electrical or optical signals travel in one direction only, are essential for telecommunication and quantum applications, but they are often both lossy and bulky to implement. A prototype device demonstrates nonreciprocity in a microwave optomechanical circuit that allows for dynamic isolation control while avoiding the need for large magnetic fields.
      [Phys. Rev. X 7, 031001] Published Thu Jul 06, 2017
      Citation: Phys. Rev. X 7, 031001 (2017)
      PubDate: 2017-07-06T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031001
      Issue No: Vol. 7, No. 3 (2017)
       
  • Coherent Rabi Dynamics of a Superradiant Spin Ensemble in a Microwave
           Cavity

    • Authors: B. C. Rose; A. M. Tyryshkin, H. Riemann, N. V. Abrosimov, P. Becker, H.-J. Pohl, M. L. W. Thewalt, K. M. Itoh, S. A. Lyon
      First page: 031002
      Abstract: Author(s): B. C. Rose, A. M. Tyryshkin, H. Riemann, N. V. Abrosimov, P. Becker, H.-J. Pohl, M. L. W. Thewalt, K. M. Itoh, and S. A. Lyon
      Ensembles of electron spins can couple to one another and emit collectively in a process known as “superradiance.” Researchers demonstrate strong coupling of a superradiant ensemble of donor spins in silicon, paving the way for future studies of entanglement and implementing a spin ensemble quantum memory.
      [Phys. Rev. X 7, 031002] Published Mon Jul 10, 2017
      Citation: Phys. Rev. X 7, 031002 (2017)
      PubDate: 2017-07-10T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031002
      Issue No: Vol. 7, No. 3 (2017)
       
  • Fingerprinting Molecular Relaxation in Deformed Polymers

    • Authors: Zhe Wang; Christopher N. Lam, Wei-Ren Chen, Weiyu Wang, Jianning Liu, Yun Liu, Lionel Porcar, Christopher B. Stanley, Zhichen Zhao, Kunlun Hong, Yangyang Wang
      First page: 031003
      Abstract: Author(s): Zhe Wang, Christopher N. Lam, Wei-Ren Chen, Weiyu Wang, Jianning Liu, Yun Liu, Lionel Porcar, Christopher B. Stanley, Zhichen Zhao, Kunlun Hong, and Yangyang Wang
      Results from a new method of analyzing neutron-scattering data from polymer samples under deformation may challenge the prevailing “tube model” of polymer motion.
      [Phys. Rev. X 7, 031003] Published Mon Jul 10, 2017
      Citation: Phys. Rev. X 7, 031003 (2017)
      PubDate: 2017-07-10T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031003
      Issue No: Vol. 7, No. 3 (2017)
       
  • Flow Ambiguity: A Path Towards Classically Driven Blind Quantum
           Computation

    • Authors: Atul Mantri; Tommaso F. Demarie, Nicolas C. Menicucci, Joseph F. Fitzsimons
      First page: 031004
      Abstract: Author(s): Atul Mantri, Tommaso F. Demarie, Nicolas C. Menicucci, and Joseph F. Fitzsimons
      Current protocols for securely delegating computation to remote quantum computers require some form of quantum communication, thus limiting secure access to future cloud-based quantum computing resources. A new analysis shows that it is possible to hide critical aspects of a computation delegated to a quantum computer using only classical communication.
      [Phys. Rev. X 7, 031004] Published Tue Jul 11, 2017
      Citation: Phys. Rev. X 7, 031004 (2017)
      PubDate: 2017-07-11T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031004
      Issue No: Vol. 7, No. 3 (2017)
       
  • Rotation-Induced Macromolecular Spooling of DNA

    • Authors: Tyler N. Shendruk; David Sean, Daniel J. Berard, Julian Wolf, Justin Dragoman, Sophie Battat, Gary W. Slater, Sabrina R. Leslie
      First page: 031005
      Abstract: Author(s): Tyler N. Shendruk, David Sean, Daniel J. Berard, Julian Wolf, Justin Dragoman, Sophie Battat, Gary W. Slater, and Sabrina R. Leslie
      DNA’s many tangles and loops make it difficult to take an accurate inventory of in vitro genetic material. Now, researchers show how DNA can be wrapped in a single strand around a rotating micrometer-sized cylinder.
      [Phys. Rev. X 7, 031005] Published Tue Jul 11, 2017
      Citation: Phys. Rev. X 7, 031005 (2017)
      PubDate: 2017-07-11T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031005
      Issue No: Vol. 7, No. 3 (2017)
       
  • Black Hole on a Chip: Proposal for a Physical Realization of the
           Sachdev-Ye-Kitaev model in a Solid-State System

    • Authors: D. I. Pikulin; M. Franz
      First page: 031006
      Abstract: Author(s): D. I. Pikulin and M. Franz
      General relativity and quantum mechanics are at odds in the extreme environments of black holes, but black holes can only be observed from large distances. Scientists propose a solid-state “black hole on a chip” using the interface between a three-dimensional topological insulator and an ordinary superconductor.
      [Phys. Rev. X 7, 031006] Published Thu Jul 13, 2017
      Citation: Phys. Rev. X 7, 031006 (2017)
      PubDate: 2017-07-13T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031006
      Issue No: Vol. 7, No. 3 (2017)
       
  • Coherent Photon Manipulation in Interacting Atomic Ensembles

    • Authors: Callum R. Murray; Thomas Pohl
      First page: 031007
      Abstract: Author(s): Callum R. Murray and Thomas Pohl
      The quantum information processing techniques of the future may rely on photon-photon interactions, which researchers now theoretically demonstrate are possible using polaritons, a type of quasiparticle.
      [Phys. Rev. X 7, 031007] Published Thu Jul 13, 2017
      Citation: Phys. Rev. X 7, 031007 (2017)
      PubDate: 2017-07-13T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031007
      Issue No: Vol. 7, No. 3 (2017)
       
  • Spatial Evolution of Human Dialects

    • Authors: James Burridge
      First page: 031008
      Abstract: Author(s): James Burridge
      A new model of language evolution assumes that changes in the spatial boundaries between dialects are controlled by a surface tension effect.
      [Phys. Rev. X 7, 031008] Published Mon Jul 17, 2017
      Citation: Phys. Rev. X 7, 031008 (2017)
      PubDate: 2017-07-17T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031008
      Issue No: Vol. 7, No. 3 (2017)
       
  • Pairing in Luttinger Liquids and Quantum Hall States

    • Authors: Charles L. Kane; Ady Stern, Bertrand I. Halperin
      First page: 031009
      Abstract: Author(s): Charles L. Kane, Ady Stern, and Bertrand I. Halperin
      Theories for understanding two-dimensional electronic systems, such as certain exotic states that could be useful for quantum computing, are not as well developed as their one-dimensional counterparts. A new mathematical analysis extends a successful theory for one-dimensional conductors—Luttinger liquid theory—to two dimensions, revealing novel properties of these systems.
      [Phys. Rev. X 7, 031009] Published Tue Jul 18, 2017
      Citation: Phys. Rev. X 7, 031009 (2017)
      PubDate: 2017-07-18T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031009
      Issue No: Vol. 7, No. 3 (2017)
       
  • Stretchable Persistent Spin Helices in GaAs Quantum Wells

    • Authors: Florian Dettwiler; Jiyong Fu, Shawn Mack, Pirmin J. Weigele, J. Carlos Egues, David D. Awschalom, Dominik M. Zumbühl
      First page: 031010
      Abstract: Author(s): Florian Dettwiler, Jiyong Fu, Shawn Mack, Pirmin J. Weigele, J. Carlos Egues, David D. Awschalom, and Dominik M. Zumbühl
      Controlling the electron spin could be an effective way to store and manipulate information in quantum devices, but it is challenging because spins randomize over time. A novel technique demonstrates, experimentally, a way to manipulate spin as an electron travels across a chip while being protected from randomization.
      [Phys. Rev. X 7, 031010] Published Tue Jul 18, 2017
      Citation: Phys. Rev. X 7, 031010 (2017)
      PubDate: 2017-07-18T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031010
      Issue No: Vol. 7, No. 3 (2017)
       
  • Measuring Out-of-Time-Order Correlators on a Nuclear Magnetic Resonance
           Quantum Simulator

    • Authors: Jun Li; Ruihua Fan, Hengyan Wang, Bingtian Ye, Bei Zeng, Hui Zhai, Xinhua Peng, Jiangfeng Du
      First page: 031011
      Abstract: Author(s): Jun Li, Ruihua Fan, Hengyan Wang, Bingtian Ye, Bei Zeng, Hui Zhai, Xinhua Peng, and Jiangfeng Du
      Two experimental groups have taken a step towards observing the “scrambling” of information that occurs as a many-body quantum system thermalizes.
      [Phys. Rev. X 7, 031011] Published Wed Jul 19, 2017
      Citation: Phys. Rev. X 7, 031011 (2017)
      PubDate: 2017-07-19T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031011
      Issue No: Vol. 7, No. 3 (2017)
       
  • Tomography of a Mode-Tunable Coherent Single-Photon Subtractor

    • Authors: Young-Sik Ra; Clément Jacquard, Adrien Dufour, Claude Fabre, Nicolas Treps
      First page: 031012
      Abstract: Author(s): Young-Sik Ra, Clément Jacquard, Adrien Dufour, Claude Fabre, and Nicolas Treps
      A mode-selective nonlinear optics technique is used to extract a single photon from multimode light, a key operation for hybrid optical quantum information processing.
      [Phys. Rev. X 7, 031012] Published Wed Jul 19, 2017
      Citation: Phys. Rev. X 7, 031012 (2017)
      PubDate: 2017-07-19T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031012
      Issue No: Vol. 7, No. 3 (2017)
       
  • Fork Tensor-Product States: Efficient Multiorbital Real-Time DMFT Solver

    • Authors: Daniel Bauernfeind; Manuel Zingl, Robert Triebl, Markus Aichhorn, Hans Gerd Evertz
      First page: 031013
      Abstract: Author(s): Daniel Bauernfeind, Manuel Zingl, Robert Triebl, Markus Aichhorn, and Hans Gerd Evertz
      Theoretically characterizing materials that are strongly correlated has been a long-standing challenge. A new method models the atomic excitations of such materials with high resolution at all energies
      [Phys. Rev. X 7, 031013] Published Thu Jul 20, 2017
      Citation: Phys. Rev. X 7, 031013 (2017)
      PubDate: 2017-07-20T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031013
      Issue No: Vol. 7, No. 3 (2017)
       
  • Stochastic p-Bits for Invertible Logic

    • Authors: Kerem Yunus Camsari; Rafatul Faria, Brian M. Sutton, Supriyo Datta
      First page: 031014
      Abstract: Author(s): Kerem Yunus Camsari, Rafatul Faria, Brian M. Sutton, and Supriyo Datta
      Digital electronics are based on deterministic units called bits that can have one of two values, 0 and 1. New theoretical work suggests that circuits built out of probabilistic units that fluctuate randomly in value between 0 and 1 can be used to perform multiple functions: A multiplier, for example, can also function as a factorizer.
      [Phys. Rev. X 7, 031014] Published Thu Jul 20, 2017
      Citation: Phys. Rev. X 7, 031014 (2017)
      PubDate: 2017-07-20T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031014
      Issue No: Vol. 7, No. 3 (2017)
       
  • High-Performance Versatile Setup for Simultaneous Brillouin-Raman
           Microspectroscopy

    • Authors: F. Scarponi; S. Mattana, S. Corezzi, S. Caponi, L. Comez, P. Sassi, A. Morresi, M. Paolantoni, L. Urbanelli, C. Emiliani, L. Roscini, L. Corte, G. Cardinali, F. Palombo, J. R. Sandercock, D. Fioretto
      First page: 031015
      Abstract: Author(s): F. Scarponi, S. Mattana, S. Corezzi, S. Caponi, L. Comez, P. Sassi, A. Morresi, M. Paolantoni, L. Urbanelli, C. Emiliani, L. Roscini, L. Corte, G. Cardinali, F. Palombo, J. R. Sandercock, and D. Fioretto
      Spectroscopy of soft matter such as biological material suffers from low contrast and low resolution. A prototype of a new instrument concept that combines Raman and Brillouin spectrometry, however, demonstrates superior performance for studying the chemical makeup and mechanical properties of matter in a variety of applications.
      [Phys. Rev. X 7, 031015] Published Fri Jul 21, 2017
      Citation: Phys. Rev. X 7, 031015 (2017)
      PubDate: 2017-07-21T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031015
      Issue No: Vol. 7, No. 3 (2017)
       
  • Quantum Entanglement Growth under Random Unitary Dynamics

    • Authors: Adam Nahum; Jonathan Ruhman, Sagar Vijay, Jeongwan Haah
      First page: 031016
      Abstract: Author(s): Adam Nahum, Jonathan Ruhman, Sagar Vijay, and Jeongwan Haah
      Physicists have long sought to understand how quantum dynamics generates the nonlocal correlations known as entanglement. Theoretical models are proposed to explain the growth of entanglement over time in different numbers of spatial dimensions.
      [Phys. Rev. X 7, 031016] Published Mon Jul 24, 2017
      Citation: Phys. Rev. X 7, 031016 (2017)
      PubDate: 2017-07-24T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031016
      Issue No: Vol. 7, No. 3 (2017)
       
  • Using Huygens Multipole Arrays to Realize Unidirectional Needle-Like
           Radiation

    • Authors: Richard W. Ziolkowski
      First page: 031017
      Abstract: Author(s): Richard W. Ziolkowski
      Experimentally confining radiation to certain limited directions (“needle radiation”) has numerous practical applications in wave-matter interaction disciplines. A theoretical proposal for realizing such superdirectivity is presented.
      [Phys. Rev. X 7, 031017] Published Wed Jul 26, 2017
      Citation: Phys. Rev. X 7, 031017 (2017)
      PubDate: 2017-07-26T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031017
      Issue No: Vol. 7, No. 3 (2017)
       
  • Strong Bias Effect on Voltage-Driven Torque at Epitaxial Fe-MgO Interface

    • Authors: Shinji Miwa; Junji Fujimoto, Philipp Risius, Kohei Nawaoka, Minori Goto, Yoshishige Suzuki
      First page: 031018
      Abstract: Author(s): Shinji Miwa, Junji Fujimoto, Philipp Risius, Kohei Nawaoka, Minori Goto, and Yoshishige Suzuki
      Spin torque is a promising technique for flipping magnetic orientation in nanomagnets used in low-power computer memories, but accurately measuring this torque is difficult. A new experiment shows how ferromagnetic resonance can characterize spin-torque vectors at an Fe-MgO interface.
      [Phys. Rev. X 7, 031018] Published Wed Jul 26, 2017
      Citation: Phys. Rev. X 7, 031018 (2017)
      PubDate: 2017-07-26T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031018
      Issue No: Vol. 7, No. 3 (2017)
       
  • Enthalpy Landscape Dictates the Irradiation-Induced Disordering of Quartz

    • Authors: N. M. Anoop Krishnan; Bu Wang, Yingtian Yu, Yann Le Pape, Gaurav Sant, Mathieu Bauchy
      First page: 031019
      Abstract: Author(s): N. M. Anoop Krishnan, Bu Wang, Yingtian Yu, Yann Le Pape, Gaurav Sant, and Mathieu Bauchy
      A physically sound understanding of how radiation-induced damage originates and accumulates in a material has long eluded researchers. New simulations show that the roughness of the enthalpy landscape determines the extent of this damage.
      [Phys. Rev. X 7, 031019] Published Fri Jul 28, 2017
      Citation: Phys. Rev. X 7, 031019 (2017)
      PubDate: 2017-07-28T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031019
      Issue No: Vol. 7, No. 3 (2017)
       
  • Signatures of Dirac Cones in a DMRG Study of the Kagome Heisenberg Model

    • Authors: Yin-Chen He; Michael P. Zaletel, Masaki Oshikawa, Frank Pollmann
      First page: 031020
      Abstract: Author(s): Yin-Chen He, Michael P. Zaletel, Masaki Oshikawa, and Frank Pollmann
      Realizing an exotic phase of matter known as a quantum spin liquid has long eluded condensed-matter physicists. Now strong evidence is found that a particular class of exotic states of matter called a Dirac spin liquid is realized in a popular model of numerous magnets.
      [Phys. Rev. X 7, 031020] Published Fri Jul 28, 2017
      Citation: Phys. Rev. X 7, 031020 (2017)
      PubDate: 2017-07-28T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031020
      Issue No: Vol. 7, No. 3 (2017)
       
  • Quantum Common Causes and Quantum Causal Models

    • Authors: John-Mark A. Allen; Jonathan Barrett, Dominic C. Horsman, Ciarán M. Lee, Robert W. Spekkens
      First page: 031021
      Abstract: Author(s): John-Mark A. Allen, Jonathan Barrett, Dominic C. Horsman, Ciarán M. Lee, and Robert W. Spekkens
      A new model extends the definition of causality to quantum-mechanical systems.
      [Phys. Rev. X 7, 031021] Published Mon Jul 31, 2017
      Citation: Phys. Rev. X 7, 031021 (2017)
      PubDate: 2017-07-31T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031021
      Issue No: Vol. 7, No. 3 (2017)
       
  • Autonomous Quantum Clocks: Does Thermodynamics Limit Our Ability to
           Measure Time'

    • Authors: Paul Erker; Mark T. Mitchison, Ralph Silva, Mischa P. Woods, Nicolas Brunner, Marcus Huber
      First page: 031022
      Abstract: Author(s): Paul Erker, Mark T. Mitchison, Ralph Silva, Mischa P. Woods, Nicolas Brunner, and Marcus Huber
      A simple model of an autonomous quantum clock yields a quantitative connection between the clock’s thermodynamic cost and its accuracy and resolution.
      [Phys. Rev. X 7, 031022] Published Wed Aug 02, 2017
      Citation: Phys. Rev. X 7, 031022 (2017)
      PubDate: 2017-08-02T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.031022
      Issue No: Vol. 7, No. 3 (2017)
       
  • Shape and Symmetry Determine Two-Dimensional Melting Transitions of Hard
           Regular Polygons

    • Authors: Joshua A. Anderson; James Antonaglia, Jaime A. Millan, Michael Engel, Sharon C. Glotzer
      First page: 021001
      Abstract: Author(s): Joshua A. Anderson, James Antonaglia, Jaime A. Millan, Michael Engel, and Sharon C. Glotzer
      Not much is known about what shapes of molecules lead to an x-atic phase, an exotic phase of two-dimensional matter that shares properties of both fluids and solids. A new set of simulations investigates the behavior of a range of polygon-shaped particles and shows how body symmetry influences these phase transitions.
      [Phys. Rev. X 7, 021001] Published Wed Apr 05, 2017
      Citation: Phys. Rev. X 7, 021001 (2017)
      PubDate: 2017-04-05T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021001
      Issue No: Vol. 7, No. 2 (2017)
       
  • Brownian yet Non-Gaussian Diffusion: From Superstatistics to Subordination
           of Diffusing Diffusivities

    • Authors: Aleksei V. Chechkin; Flavio Seno, Ralf Metzler, Igor M. Sokolov
      First page: 021002
      Abstract: Author(s): Aleksei V. Chechkin, Flavio Seno, Ralf Metzler, and Igor M. Sokolov
      Brownian motion—the random movement of microscopic particles in a fluid—usually gives rise to a Gaussian probability of finding a particle at a particular place at a specific time. But in some situations, this probability behaves differently. A new mathematical model shows how to reconcile this behavior with other hallmarks of Brownian motion.
      [Phys. Rev. X 7, 021002] Published Wed Apr 05, 2017
      Citation: Phys. Rev. X 7, 021002 (2017)
      PubDate: 2017-04-05T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021002
      Issue No: Vol. 7, No. 2 (2017)
       
  • Quantum and Information Thermodynamics: A Unifying Framework Based on
           Repeated Interactions

    • Authors: Philipp Strasberg; Gernot Schaller, Tobias Brandes, Massimiliano Esposito
      First page: 021003
      Abstract: Author(s): Philipp Strasberg, Gernot Schaller, Tobias Brandes, and Massimiliano Esposito
      Nanomachines are subject to random thermal and quantum fluctuations that are not captured by traditional thermodynamic theory. A new theoretical investigation offers a step toward a unified nanoscale theory by showing how externally prepared systems (e.g., atoms in an optical cavity or DNA bases in an enzyme reaction) that interact with a nanoscopic device can be a source of nonequilbrium free energy.
      [Phys. Rev. X 7, 021003] Published Fri Apr 07, 2017
      Citation: Phys. Rev. X 7, 021003 (2017)
      PubDate: 2017-04-07T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021003
      Issue No: Vol. 7, No. 2 (2017)
       
  • Thermodynamics of Computational Copying in Biochemical Systems

    • Authors: Thomas E. Ouldridge; Christopher C. Govern, Pieter Rein ten Wolde
      First page: 021004
      Abstract: Author(s): Thomas E. Ouldridge, Christopher C. Govern, and Pieter Rein ten Wolde
      Both computers and living cells copy information, but doing so comes at a cost of energy. A new theoretical analysis shows that biological systems come close to but do not reach the predicted lower bound on this energy, and that the cost increases as copying becomes more accurate.
      [Phys. Rev. X 7, 021004] Published Fri Apr 07, 2017
      Citation: Phys. Rev. X 7, 021004 (2017)
      PubDate: 2017-04-07T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021004
      Issue No: Vol. 7, No. 2 (2017)
       
  • Energy as a Detector of Nonlocality of Many-Body Spin Systems

    • Authors: J. Tura; G. De las Cuevas, R. Augusiak, M. Lewenstein, A. Acín, J. I. Cirac
      First page: 021005
      Abstract: Author(s): J. Tura, G. De las Cuevas, R. Augusiak, M. Lewenstein, A. Acín, and J. I. Cirac
      Nonlocal correlations—correlations among atomic particles that cannot be described classically and that are stronger than those accounted for by entanglement—are of fundamental interest to physicists, but remain difficult to characterize in many-body systems. A new theoretical analysis shows that the ground states of spin Hamiltonians in some systems can exhibit nonlocal correlations.
      [Phys. Rev. X 7, 021005] Published Mon Apr 10, 2017
      Citation: Phys. Rev. X 7, 021005 (2017)
      PubDate: 2017-04-10T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021005
      Issue No: Vol. 7, No. 2 (2017)
       
  • Efficient Quantum Pseudorandomness with Nearly Time-Independent
           Hamiltonian Dynamics

    • Authors: Yoshifumi Nakata; Christoph Hirche, Masato Koashi, Andreas Winter
      First page: 021006
      Abstract: Author(s): Yoshifumi Nakata, Christoph Hirche, Masato Koashi, and Andreas Winter
      Methods for generating quantum pseudorandomness are essential to understanding randomness in many quantum phenomena, but have not been fully explored. A new analysis shows that quantum pseudorandomness can appear spontaneously in certain many-body systems, leading to a prescription for developing quantum circuits that generate pseudorandomness.
      [Phys. Rev. X 7, 021006] Published Mon Apr 10, 2017
      Citation: Phys. Rev. X 7, 021006 (2017)
      PubDate: 2017-04-10T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021006
      Issue No: Vol. 7, No. 2 (2017)
       
  • Entropy Production in Field Theories without Time-Reversal Symmetry:
           Quantifying the Non-Equilibrium Character of Active Matter

    • Authors: Cesare Nardini; Étienne Fodor, Elsen Tjhung, Frédéric van Wijland, Julien Tailleur, Michael E. Cates
      First page: 021007
      Abstract: Author(s): Cesare Nardini, Étienne Fodor, Elsen Tjhung, Frédéric van Wijland, Julien Tailleur, and Michael E. Cates
      Active matter systems, composed of individual agents that use energy to self-propel, operate far from thermal equilibrium. But markers of nonequilibrium at macroscopic scales are often elusive. A new theoretical analysis shows how to diagnose large-scale breakdowns in time-reversal symmetry, which is a key property of nonequilibrium.
      [Phys. Rev. X 7, 021007] Published Tue Apr 18, 2017
      Citation: Phys. Rev. X 7, 021007 (2017)
      PubDate: 2017-04-18T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021007
      Issue No: Vol. 7, No. 2 (2017)
       
  • Improving Broadband Displacement Detection with Quantum Correlations

    • Authors: N. S. Kampel; R. W. Peterson, R. Fischer, P.-L. Yu, K. Cicak, R. W. Simmonds, K. W. Lehnert, C. A. Regal
      First page: 021008
      Abstract: Author(s): N. S. Kampel, R. W. Peterson, R. Fischer, P.-L. Yu, K. Cicak, R. W. Simmonds, K. W. Lehnert, and C. A. Regal
      Ultraprecise measurements of displacement and force can run into a limit on precision due to random forces imparted by the photons used for the measurement. An investigation into a technique for modifying the readout of an interferometer to avoid these limits demonstrates sensitivity improvements.
      [Phys. Rev. X 7, 021008] Published Tue Apr 18, 2017
      Citation: Phys. Rev. X 7, 021008 (2017)
      PubDate: 2017-04-18T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021008
      Issue No: Vol. 7, No. 2 (2017)
       
  • Magnon Accumulation by Clocked Laser Excitation as Source of Long-Range
           Spin Waves in Transparent Magnetic Films

    • Authors: M. Jäckl; V. I. Belotelov, I. A. Akimov, I. V. Savochkin, D. R. Yakovlev, A. K. Zvezdin, M. Bayer
      First page: 021009
      Abstract: Author(s): M. Jäckl, V. I. Belotelov, I. A. Akimov, I. V. Savochkin, D. R. Yakovlev, A. K. Zvezdin, and M. Bayer
      Magnetization waves (or spin waves) are an intriguing alternative to charge currents in computation and data processing. A new experiment shows how a series of ultrashort laser pulses can be used to generate spin waves, a method that has many advantages over conventional means.
      [Phys. Rev. X 7, 021009] Published Wed Apr 19, 2017
      Citation: Phys. Rev. X 7, 021009 (2017)
      PubDate: 2017-04-19T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021009
      Issue No: Vol. 7, No. 2 (2017)
       
  • Exact Critical Exponents for the Antiferromagnetic Quantum Critical Metal
           in Two Dimensions

    • Authors: Andres Schlief; Peter Lunts, Sung-Sik Lee
      First page: 021010
      Abstract: Author(s): Andres Schlief, Peter Lunts, and Sung-Sik Lee
      Strange metals, which exhibit unusual changes in physical properties such as electrical resistance and heat capacity in response to temperature, are difficult to understand with current theoretical tools. A new analysis provides the exact solution to a theory that describes two-dimensional strange metals that arise as a metal transitions to a magnet.
      [Phys. Rev. X 7, 021010] Published Thu Apr 20, 2017
      Citation: Phys. Rev. X 7, 021010 (2017)
      PubDate: 2017-04-20T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021010
      Issue No: Vol. 7, No. 2 (2017)
       
  • Josephson Radiation from Gapless Andreev Bound States in HgTe-Based
           Topological Junctions

    • Authors: R. S. Deacon; J. Wiedenmann, E. Bocquillon, F. Domínguez, T. M. Klapwijk, P. Leubner, C. Brüne, E. M. Hankiewicz, S. Tarucha, K. Ishibashi, H. Buhmann, L. W. Molenkamp
      First page: 021011
      Abstract: Author(s): R. S. Deacon, J. Wiedenmann, E. Bocquillon, F. Domínguez, T. M. Klapwijk, P. Leubner, C. Brüne, E. M. Hankiewicz, S. Tarucha, K. Ishibashi, H. Buhmann, and L. W. Molenkamp
      Majorana particles, which are their own antiparticles, offer great potential for future quantum computers, but significant experimental challenges hamper proof of their existence and properties. New measurements of electrical supercurrents in an HgTe quantum well provide a way to gain insight into the induced superconductivity required for these experiments.
      [Phys. Rev. X 7, 021011] Published Thu Apr 20, 2017
      Citation: Phys. Rev. X 7, 021011 (2017)
      PubDate: 2017-04-20T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021011
      Issue No: Vol. 7, No. 2 (2017)
       
  • Emergent Eigenstate Solution to Quantum Dynamics Far from Equilibrium

    • Authors: Lev Vidmar; Deepak Iyer, Marcos Rigol
      First page: 021012
      Abstract: Author(s): Lev Vidmar, Deepak Iyer, and Marcos Rigol
      Quantum systems that are far from equilibrium can exhibit strange behavior, such as the emergence of coherence in an expanding Bose gas in an optical lattice. A theoretical analysis provides new insight into this phenomenon and a toolkit for understanding a wide range of similar phenomena.
      [Phys. Rev. X 7, 021012] Published Tue Apr 25, 2017
      Citation: Phys. Rev. X 7, 021012 (2017)
      PubDate: 2017-04-25T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021012
      Issue No: Vol. 7, No. 2 (2017)
       
  • Critical Properties of the Many-Body Localization Transition

    • Authors: Vedika Khemani; S. P. Lim, D. N. Sheng, David A. Huse
      First page: 021013
      Abstract: Author(s): Vedika Khemani, S. P. Lim, D. N. Sheng, and David A. Huse
      Some quantum systems can enter a many-body localized (MBL) phase, where the particles do not settle into thermal equilibrium but remain stuck in some initial state. A new theoretical analysis explores the transition between MBL and thermal phases and finds that the transition is driven by the growth of a network of quantum entanglement.
      [Phys. Rev. X 7, 021013] Published Tue Apr 25, 2017
      Citation: Phys. Rev. X 7, 021013 (2017)
      PubDate: 2017-04-25T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021013
      Issue No: Vol. 7, No. 2 (2017)
       
  • Coherent Coupling of a Single Molecule to a Scanning Fabry-Perot
           Microcavity

    • Authors: Daqing Wang; Hrishikesh Kelkar, Diego Martin-Cano, Tobias Utikal, Stephan Götzinger, Vahid Sandoghdar
      First page: 021014
      Abstract: Author(s): Daqing Wang, Hrishikesh Kelkar, Diego Martin-Cano, Tobias Utikal, Stephan Götzinger, and Vahid Sandoghdar
      Efficient interactions between photons and atoms are an essential ingredient for future quantum networks. A new experiment uses an optical resonator to create enhanced coupling between light and a single organic dye molecule.
      [Phys. Rev. X 7, 021014] Published Wed Apr 26, 2017
      Citation: Phys. Rev. X 7, 021014 (2017)
      PubDate: 2017-04-26T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021014
      Issue No: Vol. 7, No. 2 (2017)
       
  • Parametric Instability Rates in Periodically Driven Band Systems

    • Authors: S. Lellouch; M. Bukov, E. Demler, N. Goldman
      First page: 021015
      Abstract: Author(s): S. Lellouch, M. Bukov, E. Demler, and N. Goldman
      Driving a quantum liquid—by subjecting it to some external force—can generate exotic phases of matter, but such phases are unstable. A suite of mathematical methods reveals the origins of these instabilities and identifies physical manifestations that can be observed in current experiments.
      [Phys. Rev. X 7, 021015] Published Fri May 05, 2017
      Citation: Phys. Rev. X 7, 021015 (2017)
      PubDate: 2017-05-05T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021015
      Issue No: Vol. 7, No. 2 (2017)
       
  • Hot Electrons Regain Coherence in Semiconducting Nanowires

    • Authors: Jonathan Reiner; Abhay Kumar Nayak, Nurit Avraham, Andrew Norris, Binghai Yan, Ion Cosma Fulga, Jung-Hyun Kang, Toesten Karzig, Hadas Shtrikman, Haim Beidenkopf
      First page: 021016
      Abstract: Author(s): Jonathan Reiner, Abhay Kumar Nayak, Nurit Avraham, Andrew Norris, Binghai Yan, Ion Cosma Fulga, Jung-Hyun Kang, Toesten Karzig, Hadas Shtrikman, and Haim Beidenkopf
      Understanding the behavior of electrons in semiconducting nanowires is hindered by difficulties in probing these delicate structures. Development of a portable chamber, which keeps the nanowires under ultrahigh vacuum from growth to measurement, allows for the first thorough study of electron phase coherence in a semiconducting nanowire.
      [Phys. Rev. X 7, 021016] Published Fri May 05, 2017
      Citation: Phys. Rev. X 7, 021016 (2017)
      PubDate: 2017-05-05T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021016
      Issue No: Vol. 7, No. 2 (2017)
       
  • Wannier-Bloch Approach to Localization in High-Harmonics Generation in
           Solids

    • Authors: Edyta N. Osika; Alexis Chacón, Lisa Ortmann, Noslen Suárez, Jose Antonio Pérez-Hernández, Bartłomiej Szafran, Marcelo F. Ciappina, Fernando Sols, Alexandra S. Landsman, Maciej Lewenstein
      First page: 021017
      Abstract: Author(s): Edyta N. Osika, Alexis Chacón, Lisa Ortmann, Noslen Suárez, Jose Antonio Pérez-Hernández, Bartłomiej Szafran, Marcelo F. Ciappina, Fernando Sols, Alexandra S. Landsman, and Maciej Lewenstein
      High harmonic generation can produce attosecond-long pulses of light, which are a useful probe of physical processes that require extremely high time resolution. A new mathematical analysis shows how electron delocalization contributes to this emission in a solid.
      [Phys. Rev. X 7, 021017] Published Mon May 08, 2017
      Citation: Phys. Rev. X 7, 021017 (2017)
      PubDate: 2017-05-08T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021017
      Issue No: Vol. 7, No. 2 (2017)
       
  • Efficient Representation of Fully Many-Body Localized Systems Using Tensor
           Networks

    • Authors: Thorsten B. Wahl; Arijeet Pal, Steven H. Simon
      First page: 021018
      Abstract: Author(s): Thorsten B. Wahl, Arijeet Pal, and Steven H. Simon
      Many-body-localized (MBL) phases are an intriguing state of matter where quantum systems fail to thermalize and retain their initial conditions for an indefinite amount of time. A new proposal for how to mathematically encode the dynamics of large, one-dimensional MBL systems shows an exponential decrease in computational time for analyzing the energy spectrum.
      [Phys. Rev. X 7, 021018] Published Mon May 08, 2017
      Citation: Phys. Rev. X 7, 021018 (2017)
      PubDate: 2017-05-08T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021018
      Issue No: Vol. 7, No. 2 (2017)
       
  • Predicted Realization of Cubic Dirac Fermion in Quasi-One-Dimensional
           Transition-Metal Monochalcogenides

    • Authors: Qihang Liu; Alex Zunger
      First page: 021019
      Abstract: Author(s): Qihang Liu and Alex Zunger
      Cubically dispersed Dirac fermions are proposed exotic quasiparticles that have no analog in the standard model of particle physics, and they have not yet been identified in any compound. A design methodology quickly identifies one group of compounds as an ideal candidate and shows promise for realizing other novel types of fermions.
      [Phys. Rev. X 7, 021019] Published Tue May 09, 2017
      Citation: Phys. Rev. X 7, 021019 (2017)
      PubDate: 2017-05-09T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021019
      Issue No: Vol. 7, No. 2 (2017)
       
  • Bistability Versus Metastability in Driven Dissipative Rydberg Gases

    • Authors: F. Letscher; O. Thomas, T. Niederprüm, M. Fleischhauer, H. Ott
      First page: 021020
      Abstract: Author(s): F. Letscher, O. Thomas, T. Niederprüm, M. Fleischhauer, and H. Ott
      When an ensemble of atoms interacts with an environment, it’s possible that two steady states can coexist—a bistable state. A new experiment investigates this possibility in a sample of Rydberg atoms and finds that, in large systems, many excitations exist that are incompatible with a bistable state.
      [Phys. Rev. X 7, 021020] Published Wed May 10, 2017
      Citation: Phys. Rev. X 7, 021020 (2017)
      PubDate: 2017-05-10T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021020
      Issue No: Vol. 7, No. 2 (2017)
       
  • Quantum Entanglement in Neural Network States

    • Authors: Dong-Ling Deng; Xiaopeng Li, S. Das Sarma
      First page: 021021
      Abstract: Author(s): Dong-Ling Deng, Xiaopeng Li, and S. Das Sarma
      Machine learning has recently gained attention as a possible way to understand phase transitions in many-body quantum systems. A new entanglement analysis reveals crucial properties of the data structures that encode quantum states in a neural network, opening new inroads in applying machine learning to quantum many-body physics.
      [Phys. Rev. X 7, 021021] Published Thu May 11, 2017
      Citation: Phys. Rev. X 7, 021021 (2017)
      PubDate: 2017-05-11T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021021
      Issue No: Vol. 7, No. 2 (2017)
       
  • Code Properties from Holographic Geometries

    • Authors: Fernando Pastawski; John Preskill
      First page: 021022
      Abstract: Author(s): Fernando Pastawski and John Preskill
      Deep theoretical links may exist between how space encodes information and error correcting codes being developed for quantum computers. A new analysis explores these connections further and offers insights into not just error-correction codes but also how we interpret ideas about spacetime.
      [Phys. Rev. X 7, 021022] Published Mon May 15, 2017
      Citation: Phys. Rev. X 7, 021022 (2017)
      PubDate: 2017-05-15T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021022
      Issue No: Vol. 7, No. 2 (2017)
       
  • Experimental Realization of a Dirac Monopole through the Decay of an
           Isolated Monopole

    • Authors: T. Ollikainen; K. Tiurev, A. Blinova, W. Lee, D. S. Hall, M. Möttönen
      First page: 021023
      Abstract: Author(s): T. Ollikainen, K. Tiurev, A. Blinova, W. Lee, D. S. Hall, and M. Möttönen
      Magnetic monopoles have been sought for decades but never definitively observed. Recent experiments have created different analogs of monopoles in Bose-Einstein condensates, including quantum-mechanical and Dirac monopoles. Now a new experiment in this system shows how a quantum-mechanical monopole can evolve into a Dirac monopole.
      [Phys. Rev. X 7, 021023] Published Wed May 17, 2017
      Citation: Phys. Rev. X 7, 021023 (2017)
      PubDate: 2017-05-17T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021023
      Issue No: Vol. 7, No. 2 (2017)
       
  • Designing Nanostructures for Phonon Transport via Bayesian Optimization

    • Authors: Shenghong Ju; Takuma Shiga, Lei Feng, Zhufeng Hou, Koji Tsuda, Junichiro Shiomi
      First page: 021024
      Abstract: Author(s): Shenghong Ju, Takuma Shiga, Lei Feng, Zhufeng Hou, Koji Tsuda, and Junichiro Shiomi
      Phonon transport—the movement of vibrational wave packets in a solid—in nanostructures is a key element in controlling solid heat conduction, but it remains a complex design challenge. A new framework uses informatics and phonon transport calculations to greatly accelerate the design process and reveals nonintuitive structures that are more effective than their traditional counterparts.
      [Phys. Rev. X 7, 021024] Published Wed May 17, 2017
      Citation: Phys. Rev. X 7, 021024 (2017)
      PubDate: 2017-05-17T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021024
      Issue No: Vol. 7, No. 2 (2017)
       
  • Prominent Role of Spin-Orbit Coupling in FeSe Revealed by Inelastic
           Neutron Scattering

    • Authors: Mingwei Ma; Philippe Bourges, Yvan Sidis, Yang Xu, Shiyan Li, Biaoyan Hu, Jiarui Li, Fa Wang, Yuan Li
      First page: 021025
      Abstract: Author(s): Mingwei Ma, Philippe Bourges, Yvan Sidis, Yang Xu, Shiyan Li, Biaoyan Hu, Jiarui Li, Fa Wang, and Yuan Li
      The ultimate goal of research on iron-based superconductors, which are promising candidates for high-temperature applications, is the development of a robust theory that describes their behavior at the microscopic level. New experiments with FeSe reveal that strong coupling between the spin and orbit of electrons is an essential ingredient to any such theory.
      [Phys. Rev. X 7, 021025] Published Thu May 18, 2017
      Citation: Phys. Rev. X 7, 021025 (2017)
      PubDate: 2017-05-18T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021025
      Issue No: Vol. 7, No. 2 (2017)
       
  • Excitonic Linewidth Approaching the Homogeneous Limit in MoS_{2} -Based
           van der Waals Heterostructures

    • Authors: F. Cadiz; E. Courtade, C. Robert, G. Wang, Y. Shen, H. Cai, T. Taniguchi, K. Watanabe, H. Carrere, D. Lagarde, M. Manca, T. Amand, P. Renucci, S. Tongay, X. Marie, B. Urbaszek
      First page: 021026
      Abstract: Author(s): F. Cadiz, E. Courtade, C. Robert, G. Wang, Y. Shen, H. Cai, T. Taniguchi, K. Watanabe, H. Carrere, D. Lagarde, M. Manca, T. Amand, P. Renucci, S. Tongay, X. Marie, and B. Urbaszek
      Transition-metal dichalcogenides are a class of two-dimensional materials that offer potential for developing flat and flexible transistors and optoelectronics, but their quality is often hindered by traditional methods for depositing these atomically flat materials. An experiment demonstrates a new technique that leads to higher quality crystals and better access to studying their properties.
      [Phys. Rev. X 7, 021026] Published Thu May 18, 2017
      Citation: Phys. Rev. X 7, 021026 (2017)
      PubDate: 2017-05-18T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021026
      Issue No: Vol. 7, No. 2 (2017)
       
  • Optimizing Variational Quantum Algorithms Using Pontryagin’s Minimum
           Principle

    • Authors: Zhi-Cheng Yang; Armin Rahmani, Alireza Shabani, Hartmut Neven, Claudio Chamon
      First page: 021027
      Abstract: Author(s): Zhi-Cheng Yang, Armin Rahmani, Alireza Shabani, Hartmut Neven, and Claudio Chamon
      Variational quantum algorithms (VQAs) mix quantum machines with classical optimizers to solve complex computational problems. A new analysis reveals the optimal method for implementing a VQA, which could lead to improvements in future quantum computing techniques.
      [Phys. Rev. X 7, 021027] Published Thu May 18, 2017
      Citation: Phys. Rev. X 7, 021027 (2017)
      PubDate: 2017-05-18T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021027
      Issue No: Vol. 7, No. 2 (2017)
       
  • Quantum Correlations between Single Telecom Photons and a Multimode
           On-Demand Solid-State Quantum Memory

    • Authors: Alessandro Seri; Andreas Lenhard, Daniel Rieländer, Mustafa Gündoğan, Patrick M. Ledingham, Margherita Mazzera, Hugues de Riedmatten
      First page: 021028
      Abstract: Author(s): Alessandro Seri, Andreas Lenhard, Daniel Rieländer, Mustafa Gündoğan, Patrick M. Ledingham, Margherita Mazzera, and Hugues de Riedmatten
      Crystals with rare-earth ions could lead to quantum repeaters that enable secure quantum communications over long distances.
      [Phys. Rev. X 7, 021028] Published Wed May 24, 2017
      Citation: Phys. Rev. X 7, 021028 (2017)
      PubDate: 2017-05-24T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021028
      Issue No: Vol. 7, No. 2 (2017)
       
  • Poking Holes and Cutting Corners to Achieve Clifford Gates with the
           Surface Code

    • Authors: Benjamin J. Brown; Katharina Laubscher, Markus S. Kesselring, James R. Wootton
      First page: 021029
      Abstract: Author(s): Benjamin J. Brown, Katharina Laubscher, Markus S. Kesselring, and James R. Wootton
      Error correction is essential to the development of practical quantum computers, but a leading method that relies on “surface codes” requires distinct and seemingly incompatible approaches to different computational operations. A new framework unifies these schemes and shows how to combine and compare different codes, an important tool for universal quantum computation.
      [Phys. Rev. X 7, 021029] Published Wed May 24, 2017
      Citation: Phys. Rev. X 7, 021029 (2017)
      PubDate: 2017-05-24T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021029
      Issue No: Vol. 7, No. 2 (2017)
       
  • Glassy Spin Dynamics in Geometrically Frustrated Buckled Colloidal
           Crystals

    • Authors: Di Zhou; Feng Wang, Bo Li, Xiaojie Lou, Yilong Han
      First page: 021030
      Abstract: Author(s): Di Zhou, Feng Wang, Bo Li, Xiaojie Lou, and Yilong Han
      Some crystalline materials show indirect evidence of glasslike behavior, which is surprising because a crystal is highly ordered whereas a glass is not. By using colloidal crystals composed of micrometer-sized spheres suspended in water, a new experiment mimics such phenomena and provides a novel way of understanding this behavior.
      [Phys. Rev. X 7, 021030] Published Thu May 25, 2017
      Citation: Phys. Rev. X 7, 021030 (2017)
      PubDate: 2017-05-25T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021030
      Issue No: Vol. 7, No. 2 (2017)
       
  • Vortex Reconnections and Rebounds in Trapped Atomic Bose-Einstein
           Condensates

    • Authors: Simone Serafini; Luca Galantucci, Elena Iseni, Tom Bienaimé, Russell N. Bisset, Carlo F. Barenghi, Franco Dalfovo, Giacomo Lamporesi, Gabriele Ferrari
      First page: 021031
      Abstract: Author(s): Simone Serafini, Luca Galantucci, Elena Iseni, Tom Bienaimé, Russell N. Bisset, Carlo F. Barenghi, Franco Dalfovo, Giacomo Lamporesi, and Gabriele Ferrari
      Understanding interactions between filamentary structures could offer important insights into the dynamics of a wide range of physical systems. A new imaging technique reveals novel vortex filament interactions in a Bose-Einstein condensate (BEC) and helps establish BECs as a powerful laboratory for investigating filament dynamics.
      [Phys. Rev. X 7, 021031] Published Thu May 25, 2017
      Citation: Phys. Rev. X 7, 021031 (2017)
      PubDate: 2017-05-25T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021031
      Issue No: Vol. 7, No. 2 (2017)
       
  • Topological Superconductivity in a Planar Josephson Junction

    • Authors: Falko Pientka; Anna Keselman, Erez Berg, Amir Yacoby, Ady Stern, Bertrand I. Halperin
      First page: 021032
      Abstract: Author(s): Falko Pientka, Anna Keselman, Erez Berg, Amir Yacoby, Ady Stern, and Bertrand I. Halperin
      The search for topological superconductors—superconductors where the bulk accommodates only electron pairs while the surface also allows for motion of single electrons—largely relies on tweaking environmental knobs to create the desired characteristics. A proposed experimental setup uses the phase difference between two superconductors to create a topological phase.
      [Phys. Rev. X 7, 021032] Published Tue May 30, 2017
      Citation: Phys. Rev. X 7, 021032 (2017)
      PubDate: 2017-05-30T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021032
      Issue No: Vol. 7, No. 2 (2017)
       
  • Laughlin-like States in Bosonic and Fermionic Atomic Synthetic Ladders

    • Authors: Marcello Calvanese Strinati; Eyal Cornfeld, Davide Rossini, Simone Barbarino, Marcello Dalmonte, Rosario Fazio, Eran Sela, Leonardo Mazza
      First page: 021033
      Abstract: Author(s): Marcello Calvanese Strinati, Eyal Cornfeld, Davide Rossini, Simone Barbarino, Marcello Dalmonte, Rosario Fazio, Eran Sela, and Leonardo Mazza
      The fractional quantum Hall effect, where a 2D electron gas exhibits quantized electrical conductance, lies at the heart of proposals for practical quantum computing, but it has never been seen in ultracold atomic gases, which could offer impressive control of quantum states. A new analysis shows how a 1D analog could appear in several experimental frameworks.
      [Phys. Rev. X 7, 021033] Published Fri Jun 02, 2017
      Citation: Phys. Rev. X 7, 021033 (2017)
      PubDate: 2017-06-02T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021033
      Issue No: Vol. 7, No. 2 (2017)
       
  • Ultrathin Acoustic Metasurface-Based Schroeder Diffuser

    • Authors: Yifan Zhu; Xudong Fan, Bin Liang, Jianchun Cheng, Yun Jing
      First page: 021034
      Abstract: Author(s): Yifan Zhu, Xudong Fan, Bin Liang, Jianchun Cheng, and Yun Jing
      Sound diffusers are widely used to improve acoustics in a space, but the size of traditional diffusers limits their usefulness at low- to mid-range frequencies. New experiments show that a prototype diffuser based on acoustic metasurfaces performs on par with conventional designs despite being roughly 1 order of magnitude thinner.
      [Phys. Rev. X 7, 021034] Published Mon Jun 05, 2017
      Citation: Phys. Rev. X 7, 021034 (2017)
      PubDate: 2017-06-05T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021034
      Issue No: Vol. 7, No. 2 (2017)
       
  • Quasinormal-Mode Expansion of the Scattering Matrix

    • Authors: Filippo Alpeggiani; Nikhil Parappurath, Ewold Verhagen, L. Kuipers
      First page: 021035
      Abstract: Author(s): Filippo Alpeggiani, Nikhil Parappurath, Ewold Verhagen, and L. Kuipers
      Scattering matrices are a key mathematical tool used by physicists to understand how the output and input of many types of systems relate to one another. A new analysis shows how a scattering matrix can be determined solely based on quasinormal modes, providing an effective and powerful tool for gaining insight into complex physical systems.
      [Phys. Rev. X 7, 021035] Published Mon Jun 05, 2017
      Citation: Phys. Rev. X 7, 021035 (2017)
      PubDate: 2017-06-05T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021035
      Issue No: Vol. 7, No. 2 (2017)
       
  • Mechanism of Contact between a Droplet and an Atomically Smooth Substrate

    • Authors: Hau Yung Lo; Yuan Liu, Lei Xu
      First page: 021036
      Abstract: Author(s): Hau Yung Lo, Yuan Liu, and Lei Xu
      The air gap between a droplet and a smooth surface can drain up to 1000 times faster than theory predicts, a discrepancy that impacts many industrial processes. A new experimental investigation solves this mystery by showing how environmental influences and minute boundary velocities can speed up contact.
      [Phys. Rev. X 7, 021036] Published Tue Jun 06, 2017
      Citation: Phys. Rev. X 7, 021036 (2017)
      PubDate: 2017-06-06T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021036
      Issue No: Vol. 7, No. 2 (2017)
       
  • Physical Model of the Genotype-to-Phenotype Map of Proteins

    • Authors: Tsvi Tlusty; Albert Libchaber, Jean-Pierre Eckmann
      First page: 021037
      Abstract: Author(s): Tsvi Tlusty, Albert Libchaber, and Jean-Pierre Eckmann
      How a relatively simple gene made of DNA encodes the complex structure of a protein is an open question. A new mathematical model suggests that DNA codes for the large-scale motion of a protein in just a few parameters.
      [Phys. Rev. X 7, 021037] Published Tue Jun 06, 2017
      Citation: Phys. Rev. X 7, 021037 (2017)
      PubDate: 2017-06-06T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021037
      Issue No: Vol. 7, No. 2 (2017)
       
  • Single Strontium Rydberg Ion Confined in a Paul Trap

    • Authors: Gerard Higgins; Weibin Li, Fabian Pokorny, Chi Zhang, Florian Kress, Christine Maier, Johannes Haag, Quentin Bodart, Igor Lesanovsky, Markus Hennrich
      First page: 021038
      Abstract: Author(s): Gerard Higgins, Weibin Li, Fabian Pokorny, Chi Zhang, Florian Kress, Christine Maier, Johannes Haag, Quentin Bodart, Igor Lesanovsky, and Markus Hennrich
      A trapped ion excited to a hydrogen-like Rydberg state shows promise for qubit applications.
      [Phys. Rev. X 7, 021038] Published Wed Jun 07, 2017
      Citation: Phys. Rev. X 7, 021038 (2017)
      PubDate: 2017-06-07T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021038
      Issue No: Vol. 7, No. 2 (2017)
       
  • Models and Algorithms for the Next Generation of Glass Transition Studies

    • Authors: Andrea Ninarello; Ludovic Berthier, Daniele Coslovich
      First page: 021039
      Abstract: Author(s): Andrea Ninarello, Ludovic Berthier, and Daniele Coslovich
      Computer simulations of supercooled liquids being cooled below the glass transition temperature are unable to capture the enormous dynamical range present during the transition, hindering studies of this transformation. For the first time, new computational models and optimized Monte Carlo algorithms close this gap and even go beyond experimental capabilities.
      [Phys. Rev. X 7, 021039] Published Wed Jun 07, 2017
      Citation: Phys. Rev. X 7, 021039 (2017)
      PubDate: 2017-06-07T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021039
      Issue No: Vol. 7, No. 2 (2017)
       
  • Slim Fractals: The Geometry of Doubly Transient Chaos

    • Authors: Xiaowen Chen; Takashi Nishikawa, Adilson E. Motter
      First page: 021040
      Abstract: Author(s): Xiaowen Chen, Takashi Nishikawa, and Adilson E. Motter
      Fractal geometry is inherent to chaotic systems, but this is not well understood in undriven dissipative processes, in which chaos necessarily vanishes over time. A new analysis leads to a novel framework for studying these systems and shows, for the first time, that they too can generically exhibit fractal behavior.
      [Phys. Rev. X 7, 021040] Published Thu Jun 08, 2017
      Citation: Phys. Rev. X 7, 021040 (2017)
      PubDate: 2017-06-08T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021040
      Issue No: Vol. 7, No. 2 (2017)
       
  • Engineering Matter Interactions Using Squeezed Vacuum

    • Authors: Sina Zeytinoğlu; Ataç İmamoğlu, Sebastian Huber
      First page: 021041
      Abstract: Author(s): Sina Zeytinoğlu, Ataç İmamoğlu, and Sebastian Huber
      The ability to control matter at the quantum level is essential for many applications. A new analysis shows that an exotic state known as a squeezed vacuum can provide unprecedented control over interactions between quantum entities.
      [Phys. Rev. X 7, 021041] Published Tue Jun 13, 2017
      Citation: Phys. Rev. X 7, 021041 (2017)
      PubDate: 2017-06-13T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021041
      Issue No: Vol. 7, No. 2 (2017)
       
  • Efficient Device-Independent Entanglement Detection for Multipartite
           Systems

    • Authors: F. Baccari; D. Cavalcanti, P. Wittek, A. Acín
      First page: 021042
      Abstract: Author(s): F. Baccari, D. Cavalcanti, P. Wittek, and A. Acín
      Quantum entanglement lies at the heart of proposals for encoding and manipulating information in a quantum computer, but detecting its presence in large ensembles of particles remains challenging. A new technique for entanglement detection promises to be both computationally and experimentally efficient in systems involving tens of particles.
      [Phys. Rev. X 7, 021042] Published Wed Jun 14, 2017
      Citation: Phys. Rev. X 7, 021042 (2017)
      PubDate: 2017-06-14T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021042
      Issue No: Vol. 7, No. 2 (2017)
       
  • Pulse Duration of Seeded Free-Electron Lasers

    • Authors: Paola Finetti et al.
      First page: 021043
      Abstract: Author(s): Paola Finetti et al.
      FERMI is a novel class of free-electron laser that is capable of producing femtosecond pulses of ultraviolet and x-ray light, essential to studying ultrafast processes in matter. A new investigation characterizes FERMI’s pulse shape and confirms that it routinely generates Gaussian pulses lasting a few tens of femtoseconds.
      [Phys. Rev. X 7, 021043] Published Fri Jun 16, 2017
      Citation: Phys. Rev. X 7, 021043 (2017)
      PubDate: 2017-06-16T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021043
      Issue No: Vol. 7, No. 2 (2017)
       
  • Detection and Implications of Laser-Induced Raman Scattering at
           Astronomical Observatories

    • Authors: Frédéric P. A. Vogt; Domenico Bonaccini Calia, Wolfgang Hackenberg, Cyrielle Opitom, Mauro Comin, Linda Schmidtobreik, Jonathan Smoker, Israel Blanchard, Marcela Espinoza Contreras, Ivan Aranda, Julien Milli, Yara L. Jaffe, Fernando Selman, Johann Kolb, Pascale Hibon, Harald Kuntschner, Pierre-Yves Madec
      First page: 021044
      Abstract: Author(s): Frédéric P. A. Vogt, Domenico Bonaccini Calia, Wolfgang Hackenberg, Cyrielle Opitom, Mauro Comin, Linda Schmidtobreik, Jonathan Smoker, Israel Blanchard, Marcela Espinoza Contreras, Ivan Aranda, Julien Milli, Yara L. Jaffe, Fernando Selman, Johann Kolb, Pascale Hibon, Harald Kuntschner, and Pierre-Yves Madec
      Raman scattering could contaminate astronomical observations that use “laser guide stars” to correct for the effect of atmospheric turbulence.
      [Phys. Rev. X 7, 021044] Published Thu Jun 22, 2017
      Citation: Phys. Rev. X 7, 021044 (2017)
      PubDate: 2017-06-22T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021044
      Issue No: Vol. 7, No. 2 (2017)
       
  • Pump-Power-Driven Mode Switching in a Microcavity Device and Its Relation
           to Bose-Einstein Condensation

    • Authors: H. A. M. Leymann; D. Vorberg, T. Lettau, C. Hopfmann, C. Schneider, M. Kamp, S. Höfling, R. Ketzmerick, J. Wiersig, S. Reitzenstein, A. Eckardt
      First page: 021045
      Abstract: Author(s): H. A. M. Leymann, D. Vorberg, T. Lettau, C. Hopfmann, C. Schneider, M. Kamp, S. Höfling, R. Ketzmerick, J. Wiersig, S. Reitzenstein, and A. Eckardt
      Bimodal microlasers have recently gained interest for potential applications in optical memories, tunable switches, and as a platform for studying nonequilibrium phase transitions. A new investigation reveals not only the underlying mechanisms that controls mode switching in these devices but also that this switching corresponds to a transition from lasing to a minimal realization of Bose-Einstein condensation of photons.
      [Phys. Rev. X 7, 021045] Published Thu Jun 22, 2017
      Citation: Phys. Rev. X 7, 021045 (2017)
      PubDate: 2017-06-22T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021045
      Issue No: Vol. 7, No. 2 (2017)
       
  • Isolated Spin Qubits in SiC with a High-Fidelity Infrared Spin-to-Photon
           Interface

    • Authors: David J. Christle; Paul V. Klimov, Charles F. de las Casas, Krisztián Szász, Viktor Ivády, Valdas Jokubavicius, Jawad Ul Hassan, Mikael Syväjärvi, William F. Koehl, Takeshi Ohshima, Nguyen T. Son, Erik Janzén, Ádám Gali, David D. Awschalom
      First page: 021046
      Abstract: Author(s): David J. Christle, Paul V. Klimov, Charles F. de las Casas, Krisztián Szász, Viktor Ivády, Valdas Jokubavicius, Jawad Ul Hassan, Mikael Syväjärvi, William F. Koehl, Takeshi Ohshima, Nguyen T. Son, Erik Janzén, Ádám Gali, and David D. Awschalom
      Divacancies, atom-sized defects, are potential building blocks for future quantum networks, but controlling and communicating with them requires demanding capabilities. New experiments show that divacancies in a form of silicon carbide can be isolated and allow for coherent transfer of quantum information between their spin and light.
      [Phys. Rev. X 7, 021046] Published Fri Jun 23, 2017
      Citation: Phys. Rev. X 7, 021046 (2017)
      PubDate: 2017-06-23T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021046
      Issue No: Vol. 7, No. 2 (2017)
       
  • Role of Water in the Selection of Stable Proteins at Ambient and Extreme
           Thermodynamic Conditions

    • Authors: Valentino Bianco; Giancarlo Franzese, Christoph Dellago, Ivan Coluzza
      First page: 021047
      Abstract: Author(s): Valentino Bianco, Giancarlo Franzese, Christoph Dellago, and Ivan Coluzza
      Life thrives under an enormous range of temperature and pressures, but it’s not clear how proteins are naturally selected to match their environment. New computer simulations demonstrate the critical role that water plays in this selection as well as stability differences between proteins selected at low and high temperatures.
      [Phys. Rev. X 7, 021047] Published Mon Jun 26, 2017
      Citation: Phys. Rev. X 7, 021047 (2017)
      PubDate: 2017-06-26T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021047
      Issue No: Vol. 7, No. 2 (2017)
       
  • Plasmonic Analog of Electromagnetically Induced Absorption Leads to Giant
           Thin Film Faraday Rotation of 14°

    • Authors: Dominik Floess; Mario Hentschel, Thomas Weiss, Hanns-Ulrich Habermeier, Jian Jiao, Sergei G. Tikhodeev, Harald Giessen
      First page: 021048
      Abstract: Author(s): Dominik Floess, Mario Hentschel, Thomas Weiss, Hanns-Ulrich Habermeier, Jian Jiao, Sergei G. Tikhodeev, and Harald Giessen
      Optical isolators, which are critical for preventing feedback in optical devices, are difficult to miniaturize because of the need to use centimeter-sized crystals. New experiments show a potential way around this hurdle by using embedded nanoscale wires to enhance Faraday rotation in a thin film.
      [Phys. Rev. X 7, 021048] Published Tue Jun 27, 2017
      Citation: Phys. Rev. X 7, 021048 (2017)
      PubDate: 2017-06-27T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021048
      Issue No: Vol. 7, No. 2 (2017)
       
  • Theory for Transitions Between Exponential and Stationary Phases:
           Universal Laws for Lag Time

    • Authors: Yusuke Himeoka; Kunihiko Kaneko
      First page: 021049
      Abstract: Author(s): Yusuke Himeoka and Kunihiko Kaneko
      Cell populations that are starved for nutrients can enter a little-understood stationary phase where growth is stopped without the cells dying off. A new model of a cell exhibits the same behavior that is seen in experiments, providing insight into how cells respond to nutrient depletion.
      [Phys. Rev. X 7, 021049] Published Tue Jun 27, 2017
      Citation: Phys. Rev. X 7, 021049 (2017)
      PubDate: 2017-06-27T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021049
      Issue No: Vol. 7, No. 2 (2017)
       
  • Efficient Variational Quantum Simulator Incorporating Active Error
           Minimization

    • Authors: Ying Li; Simon C. Benjamin
      First page: 021050
      Abstract: Author(s): Ying Li and Simon C. Benjamin
      Quantum computers will need to be tolerant to errors introduced by noise, but current proposals estimate that the number of qubits required for error correction will be many orders of magnitude larger than the number needed for useful computation. A new proposal uses a classical-quantum hybrid scheme to implement simple error-tolerant quantum processors with relatively few resources.
      [Phys. Rev. X 7, 021050] Published Thu Jun 29, 2017
      Citation: Phys. Rev. X 7, 021050 (2017)
      PubDate: 2017-06-29T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021050
      Issue No: Vol. 7, No. 2 (2017)
       
  • Experiments in Stochastic Thermodynamics: Short History and Perspectives

    • Authors: S. Ciliberto
      First page: 021051
      Abstract: Author(s): S. Ciliberto
      Stochastic thermodynamics extends the traditional laws of thermodynamics to microscopic systems where thermal and quantum fluctuations cannot be ignored. This review summarizes progress in this field with a look at several experimental and theoretical results and a look toward potential applications in biology and nanotechnology.
      [Phys. Rev. X 7, 021051] Published Fri Jun 30, 2017
      Citation: Phys. Rev. X 7, 021051 (2017)
      PubDate: 2017-06-30T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.021051
      Issue No: Vol. 7, No. 2 (2017)
       
  • Comment on “Penetration of Action Potentials During Collision in the
           Median and Lateral Giant Axons of Invertebrates”

    • Authors: Rune W. Berg; Marius Tving Stauning, Jakob Balslev Sørensen, Henrik Jahnsen
      First page: 028001
      Abstract: Author(s): Rune W. Berg, Marius Tving Stauning, Jakob Balslev Sørensen, and Henrik Jahnsen
      The action potential (AP) is an electrical impulse elicited by depolarization of the neuronal membrane from the resting membrane potential (around −70  mV). It propagates along the axon, allowing for rapid and distant communication. Recently, it was claimed that two APs traveling in opposite directi…
      [Phys. Rev. X 7, 028001] Published Mon Apr 24, 2017
      Citation: Phys. Rev. X 7, 028001 (2017)
      PubDate: 2017-04-24T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.028001
      Issue No: Vol. 7, No. 2 (2017)
       
  • Reply to “Comment on ‘Penetration of Action Potentials During
           Collision in the Median and Lateral Giant Axons of Invertebrates”’

    • Authors: Tian Wang; Alfredo Gonzalez-Perez, Rima Budvytyte, Andrew D. Jackson, Thomas Heimburg
      First page: 028002
      Abstract: Author(s): Tian Wang, Alfredo Gonzalez-Perez, Rima Budvytyte, Andrew D. Jackson, and Thomas Heimburg
      Berg et al. did not reproduce our results but worked on different preparations and, in one central experiment, used a significantly different electrode configuration. To clarify the situation, we have repeated their experiment on the walking leg of a lobster using an apparatus that can produce both …
      [Phys. Rev. X 7, 028002] Published Mon Apr 24, 2017
      Citation: Phys. Rev. X 7, 028002 (2017)
      PubDate: 2017-04-24T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.028002
      Issue No: Vol. 7, No. 2 (2017)
       
  • Erratum: Self-Sustained Irregular Activity in an Ensemble of Neural
           Oscillators [Phys. Rev. X 6, 011015 (2016)]

    • Authors: Ekkehard Ullner; Antonio Politi
      First page: 029901
      Abstract: Author(s): Ekkehard Ullner and Antonio Politi
      [Phys. Rev. X 7, 029901] Published Mon May 15, 2017
      Citation: Phys. Rev. X 7, 029901 (2017)
      PubDate: 2017-05-15T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.029901
      Issue No: Vol. 7, No. 2 (2017)
       
  • Publisher’s Note: Hot Electrons Regain Coherence in Semiconducting
           Nanowires [Phys. Rev. X 7, 021016 (2017)]

    • Authors: Jonathan Reiner; Abhay Kumar Nayak, Nurit Avraham, Andrew Norris, Binghai Yan, Ion Cosma Fulga, Jung-Hyun Kang, Torsten Karzig, Hadas Shtrikman, Haim Beidenkopf
      First page: 029902
      Abstract: Author(s): Jonathan Reiner, Abhay Kumar Nayak, Nurit Avraham, Andrew Norris, Binghai Yan, Ion Cosma Fulga, Jung-Hyun Kang, Torsten Karzig, Hadas Shtrikman, and Haim Beidenkopf
      [Phys. Rev. X 7, 029902] Published Fri May 26, 2017
      Citation: Phys. Rev. X 7, 029902 (2017)
      PubDate: 2017-05-26T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.029902
      Issue No: Vol. 7, No. 2 (2017)
       
  • Computer-Assisted Inverse Design of Inorganic Electrides

    • Authors: Yunwei Zhang; Hui Wang, Yanchao Wang, Lijun Zhang, Yanming Ma
      First page: 011017
      Abstract: Author(s): Yunwei Zhang, Hui Wang, Yanchao Wang, Lijun Zhang, and Yanming Ma
      Electrides are electron-rich compounds with a range of potential applications as catalysts and reducing agents. A new computer-assisted design methodology has been developed which can efficiently identify potential inorganic electrides and has found 89 new candidates.
      [Phys. Rev. X 7, 011017] Published Tue Feb 14, 2017
      Citation: Phys. Rev. X 7, 011017 (2017)
      PubDate: 2017-02-14T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011017
      Issue No: Vol. 7, No. 1 (2017)
       
  • Universal Chiral Quasisteady States in Periodically Driven Many-Body
           Systems

    • Authors: Netanel H. Lindner; Erez Berg, Mark S. Rudner
      First page: 011018
      Abstract: Author(s): Netanel H. Lindner, Erez Berg, and Mark S. Rudner
      Quantum effects are usually lost when interacting particles are disturbed by an external force, such as a laser, and heat up. Recent research points to a new class of universal phenomena that emerge from this heating.
      [Phys. Rev. X 7, 011018] Published Fri Feb 17, 2017
      Citation: Phys. Rev. X 7, 011018 (2017)
      PubDate: 2017-02-17T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011018
      Issue No: Vol. 7, No. 1 (2017)
       
  • Statistics of Infima and Stopping Times of Entropy Production and
           Applications to Active Molecular Processes

    • Authors: Izaak Neri; Édgar Roldán, Frank Jülicher
      First page: 011019
      Abstract: Author(s): Izaak Neri, Édgar Roldán, and Frank Jülicher
      While entropy always increases on large scales, it can transiently decrease in systems of the size of proteins and in the molecular machinery found in living cells. Scientists find universal laws for entropy production in mesoscopic systems and show how these laws can illuminate general properties of stochastic processes in biology.
      [Phys. Rev. X 7, 011019] Published Tue Feb 21, 2017
      Citation: Phys. Rev. X 7, 011019 (2017)
      PubDate: 2017-02-21T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011019
      Issue No: Vol. 7, No. 1 (2017)
       
  • Topological Phases Protected by Point Group Symmetry

    • Authors: Hao Song; Sheng-Jie Huang, Liang Fu, Michael Hermele
      First page: 011020
      Abstract: Author(s): Hao Song, Sheng-Jie Huang, Liang Fu, and Michael Hermele
      Not much is known about the role that geometric symmetries play in exotic states of quantum matter known as symmetry-protected topological phases. A new approach is developed to classify and understand these phases, which are shown to be comprised of simpler, lower-dimensional states.
      [Phys. Rev. X 7, 011020] Published Tue Feb 21, 2017
      Citation: Phys. Rev. X 7, 011020 (2017)
      PubDate: 2017-02-21T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011020
      Issue No: Vol. 7, No. 1 (2017)
       
  • Systematic Magnus-Based Approach for Suppressing Leakage and Nonadiabatic
           Errors in Quantum Dynamics

    • Authors: Hugo Ribeiro; Alexandre Baksic, Aashish A. Clerk
      First page: 011021
      Abstract: Author(s): Hugo Ribeiro, Alexandre Baksic, and Aashish A. Clerk
      When performing operations in a quantum computer, the system can easily end up in some undesired state. A new technique controls the quantum dynamics to reliably bring a quantum system from some initial state to a final desired state.
      [Phys. Rev. X 7, 011021] Published Wed Feb 22, 2017
      Citation: Phys. Rev. X 7, 011021 (2017)
      PubDate: 2017-02-22T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011021
      Issue No: Vol. 7, No. 1 (2017)
       
  • Deep Inelastic Scattering on Ultracold Gases

    • Authors: Johannes Hofmann; Wilhelm Zwerger
      First page: 011022
      Abstract: Author(s): Johannes Hofmann and Wilhelm Zwerger
      For decades, researchers have debated assumptions used when interpreting scattering experiments that probe the structure of matter at increasingly shorter length scales. A theoretical framework resolves some of these questions and sheds light on the nature of ultracold quantum gases.
      [Phys. Rev. X 7, 011022] Published Wed Mar 01, 2017
      Citation: Phys. Rev. X 7, 011022 (2017)
      PubDate: 2017-03-01T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011022
      Issue No: Vol. 7, No. 1 (2017)
       
  • Band Alignment and Charge Transfer in Complex Oxide Interfaces

    • Authors: Zhicheng Zhong; Philipp Hansmann
      First page: 011023
      Abstract: Author(s): Zhicheng Zhong and Philipp Hansmann
      Intrinsic limitations of semiconductors have spurred a search for new materials that can be used in next generation electronics, and transition-metal oxides (TMOs) are attractive candidates. A new scheme for predicting the electrical and magnetic behavior of TMOs shows promise for helping design future components.
      [Phys. Rev. X 7, 011023] Published Fri Mar 03, 2017
      Citation: Phys. Rev. X 7, 011023 (2017)
      PubDate: 2017-03-03T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011023
      Issue No: Vol. 7, No. 1 (2017)
       
  • Towards Resource Theory of Coherence in Distributed Scenarios

    • Authors: Alexander Streltsov; Swapan Rana, Manabendra Nath Bera, Maciej Lewenstein
      First page: 011024
      Abstract: Author(s): Alexander Streltsov, Swapan Rana, Manabendra Nath Bera, and Maciej Lewenstein
      Quantum entanglement has typically been the focus of research into quantum technologies, but other phenomena are needed to characterize quantum systems. A theory for manipulating quantum coherence in distributed scenarios is studied, leading to a mathematical characterization of the transformations that quantum states undergo in this process.
      [Phys. Rev. X 7, 011024] Published Mon Mar 06, 2017
      Citation: Phys. Rev. X 7, 011024 (2017)
      PubDate: 2017-03-06T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011024
      Issue No: Vol. 7, No. 1 (2017)
       
  • Incoherent Fermi-Pasta-Ulam Recurrences and Unconstrained Thermalization
           Mediated by Strong Phase Correlations

    • Authors: M. Guasoni; J. Garnier, B. Rumpf, D. Sugny, J. Fatome, F. Amrani, G. Millot, A. Picozzi
      First page: 011025
      Abstract: Author(s): M. Guasoni, J. Garnier, B. Rumpf, D. Sugny, J. Fatome, F. Amrani, G. Millot, and A. Picozzi
      Recurrence behaviors are well known in wave systems that initially exhibit phase coherence. A new theory shows that similar recurrences can occur among initially disordered waves as well, thus leading to a reduction of entropy that is contrary to everyday experience.
      [Phys. Rev. X 7, 011025] Published Mon Mar 06, 2017
      Citation: Phys. Rev. X 7, 011025 (2017)
      PubDate: 2017-03-06T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011025
      Issue No: Vol. 7, No. 1 (2017)
       
  • Prethermal Phases of Matter Protected by Time-Translation Symmetry

    • Authors: Dominic V. Else; Bela Bauer, Chetan Nayak
      First page: 011026
      Abstract: Author(s): Dominic V. Else, Bela Bauer, and Chetan Nayak
      In systems driven by time-varying fields, new phases of matter might exist that do not appear when the system is static. A mathematical formulation shows that novel phases of matter also exist in prethermal states, where the system exchanges heat with its environment very slowly.
      [Phys. Rev. X 7, 011026] Published Tue Mar 07, 2017
      Citation: Phys. Rev. X 7, 011026 (2017)
      PubDate: 2017-03-07T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011026
      Issue No: Vol. 7, No. 1 (2017)
       
  • Heavy Weyl Fermion State in CeRu_{4} Sn_{6}

    • Authors: Yuanfeng Xu; Changming Yue, Hongming Weng, Xi Dai
      First page: 011027
      Abstract: Author(s): Yuanfeng Xu, Changming Yue, Hongming Weng, and Xi Dai
      Weyl semimetals have highly mobile charged particles that may make them useful in electronic devices, but only a few of them have been identified thus far. Computational analysis reveals that the compound CeRu4Sn6 exhibits Weyl-like behavior and may be a new type of material known as a heavy Weyl fermion state.
      [Phys. Rev. X 7, 011027] Published Tue Mar 07, 2017
      Citation: Phys. Rev. X 7, 011027 (2017)
      PubDate: 2017-03-07T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011027
      Issue No: Vol. 7, No. 1 (2017)
       
  • Synchronization in Dynamical Networks of Locally Coupled Self-Propelled
           Oscillators

    • Authors: Demian Levis; Ignacio Pagonabarraga, Albert Díaz-Guilera
      First page: 011028
      Abstract: Author(s): Demian Levis, Ignacio Pagonabarraga, and Albert Díaz-Guilera
      Synchronization of individual behavior in a population of self-propelling units, such as fireflies or bacteria, arises in a wide variety of disciplines. A new mathematical framework provides a generalized description of such systems, revealing among other things how self-propulsion can accelerate synchronization.
      [Phys. Rev. X 7, 011028] Published Wed Mar 08, 2017
      Citation: Phys. Rev. X 7, 011028 (2017)
      PubDate: 2017-03-08T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011028
      Issue No: Vol. 7, No. 1 (2017)
       
  • Topological Defects in a Living Nematic Ensnare Swimming Bacteria

    • Authors: Mikhail M. Genkin; Andrey Sokolov, Oleg D. Lavrentovich, Igor S. Aranson
      First page: 011029
      Abstract: Author(s): Mikhail M. Genkin, Andrey Sokolov, Oleg D. Lavrentovich, and Igor S. Aranson
      Living liquid crystals are biosynthetic composites, comprised of living bacteria and liquid crystals, that exhibit unique optical and mechanical properties. A new computational model and set of experiments show how defects in the liquid crystal can concentrate or deplete the bacteria, suggesting a novel method for control and manipulation of microbial populations.
      [Phys. Rev. X 7, 011029] Published Wed Mar 08, 2017
      Citation: Phys. Rev. X 7, 011029 (2017)
      PubDate: 2017-03-08T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011029
      Issue No: Vol. 7, No. 1 (2017)
       
  • Strong Coupling Cavity QED with Gate-Defined Double Quantum Dots Enabled
           by a High Impedance Resonator

    • Authors: A. Stockklauser; P. Scarlino, J. V. Koski, S. Gasparinetti, C. K. Andersen, C. Reichl, W. Wegscheider, T. Ihn, K. Ensslin, A. Wallraff
      First page: 011030
      Abstract: Author(s): A. Stockklauser, P. Scarlino, J. V. Koski, S. Gasparinetti, C. K. Andersen, C. Reichl, W. Wegscheider, T. Ihn, K. Ensslin, and A. Wallraff
      A system combining a quantum dot and a superconducting cavity achieves the strongest light-matter coupling for this type of hybrid system.
      [Phys. Rev. X 7, 011030] Published Thu Mar 09, 2017
      Citation: Phys. Rev. X 7, 011030 (2017)
      PubDate: 2017-03-09T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011030
      Issue No: Vol. 7, No. 1 (2017)
       
  • Plasma Membrane is Compartmentalized by a Self-Similar Cortical Actin
           Meshwork

    • Authors: Sanaz Sadegh; Jenny L. Higgins, Patrick C. Mannion, Michael M. Tamkun, Diego Krapf
      First page: 011031
      Abstract: Author(s): Sanaz Sadegh, Jenny L. Higgins, Patrick C. Mannion, Michael M. Tamkun, and Diego Krapf
      In cell membranes, the dynamic organization of proteins into areas that serve various purposes is critical to proper cell function, but how this occurs is not well understood. New high-resolution imaging of mammalian cells confirms that the actin cytoskeleton actively partitions the membrane into compartments that control protein motion.
      [Phys. Rev. X 7, 011031] Published Thu Mar 09, 2017
      Citation: Phys. Rev. X 7, 011031 (2017)
      PubDate: 2017-03-09T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.011031
      Issue No: Vol. 7, No. 1 (2017)
       
  • Vertical Line Nodes in the Superconducting Gap Structure of Sr_{2} RuO_{4}

    • Authors: E. Hassinger; P. Bourgeois-Hope, H. Taniguchi, S. René de Cotret, G. Grissonnanche, M. S. Anwar, Y. Maeno, N. Doiron-Leyraud, Louis Taillefer
      First page: 011032
      Abstract: Author(s): E. Hassinger, P. Bourgeois-Hope, H. Taniguchi, S. René de Cotret, G. Grissonnanche, M. S. Anwar, Y. Maeno, N. Doiron-Leyraud, and Louis Taillefer
      The crystal Sr2RuO4 is a rare superconductor where electrons pair together in a symmetry that is thought to be a p wave, which indicates how the electrons orbit one another and orient their spins. A new investigation of heat conduction in Sr2RuO4 reveals behavior more typical of a d wave, raising questions about how the electrons are actually paired.
      [Phys. Rev. X 7, 011032] Published Wed Mar 15, 2017
      Citation: Phys. Rev. X 7, 011032 (2017)
      PubDate: 2017-03-15T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.011032
      Issue No: Vol. 7, No. 1 (2017)
       
  • Temperature-Controlled Chameleonlike Cloak

    • Authors: Ruiguang Peng; Zongqi Xiao, Qian Zhao, Fuli Zhang, Yonggang Meng, Bo Li, Ji Zhou, Yuancheng Fan, Peng Zhang, Nian-Hai Shen, Thomas Koschny, Costas M. Soukoulis
      First page: 011033
      Abstract: Author(s): Ruiguang Peng, Zongqi Xiao, Qian Zhao, Fuli Zhang, Yonggang Meng, Bo Li, Ji Zhou, Yuancheng Fan, Peng Zhang, Nian-Hai Shen, Thomas Koschny, and Costas M. Soukoulis
      Practical invisibility cloaks are typically limited to rendering objects invisible to only a very narrow, inflexible range of electromagnetic frequencies. A new prototype cloak, made from SrTiO3 cuboids, demonstrates a simple approach to designing an invisibility cloak whose working frequency can be changed by altering its temperature.
      [Phys. Rev. X 7, 011033] Published Tue Mar 21, 2017
      Citation: Phys. Rev. X 7, 011033 (2017)
      PubDate: 2017-03-21T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.011033
      Issue No: Vol. 7, No. 1 (2017)
       
  • Signatures of Many-Body Localization in a Controlled Open Quantum System

    • Authors: Henrik P. Lüschen; Pranjal Bordia, Sean S. Hodgman, Michael Schreiber, Saubhik Sarkar, Andrew J. Daley, Mark H. Fischer, Ehud Altman, Immanuel Bloch, Ulrich Schneider
      First page: 011034
      Abstract: Author(s): Henrik P. Lüschen, Pranjal Bordia, Sean S. Hodgman, Michael Schreiber, Saubhik Sarkar, Andrew J. Daley, Mark H. Fischer, Ehud Altman, Immanuel Bloch, and Ulrich Schneider
      In an isolated many-body localized system, initial quantum correlations can remain local rather than spread throughout the system. But experimental studies of such systems are difficult because of unavoidable interactions with the environment, which ultimately spoil the effect. A new method for controlling a photon bath demonstrates a first step toward understanding the effects of this coupling and extrapolating to fully isolated systems.
      [Phys. Rev. X 7, 011034] Published Tue Mar 21, 2017
      Citation: Phys. Rev. X 7, 011034 (2017)
      PubDate: 2017-03-21T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.011034
      Issue No: Vol. 7, No. 1 (2017)
       
  • Intracity Quantum Communication via Thermal Microwave Networks

    • Authors: Ze-Liang Xiang; Mengzhen Zhang, Liang Jiang, Peter Rabl
      First page: 011035
      Abstract: Author(s): Ze-Liang Xiang, Mengzhen Zhang, Liang Jiang, and Peter Rabl
      A new quantum communication protocol is robust in the presence of thermal noise, paving the way for all-microwave quantum networks.
      [Phys. Rev. X 7, 011035] Published Mon Mar 27, 2017
      Citation: Phys. Rev. X 7, 011035 (2017)
      PubDate: 2017-03-27T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.011035
      Issue No: Vol. 7, No. 1 (2017)
       
  • Publisher’s Note: Redundant Interdependencies Boost the Robustness of
           Multiplex Networks [Phys. Rev. X 7, 011013 (2017)]

    • Authors: Filippo Radicchi; Ginestra Bianconi
      First page: 019901
      Abstract: Author(s): Filippo Radicchi and Ginestra Bianconi
      [Phys. Rev. X 7, 019901] Published Fri Feb 17, 2017
      Citation: Phys. Rev. X 7, 019901 (2017)
      PubDate: 2017-02-17T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.019901
      Issue No: Vol. 7, No. 1 (2017)
       
  • Erratum: Multiple-Stage Structure Transformation of Organic-Inorganic
           Hybrid Perovskite CH_{3} NH_{3} PbI_{3} [Phys. Rev. X 6, 031042 (2016)]

    • Authors: Qiong Chen; Henan Liu, Hui-Seon Kim, Yucheng Liu, Mengjin Yang, Naili Yue, Gang Ren, Kai Zhu, Shengzhong Liu, Nam-Gyu Park, Yong Zhang
      First page: 019902
      Abstract: Author(s): Qiong Chen, Henan Liu, Hui-Seon Kim, Yucheng Liu, Mengjin Yang, Naili Yue, Gang Ren, Kai Zhu, Shengzhong Liu, Nam-Gyu Park, and Yong Zhang
      [Phys. Rev. X 7, 019902] Published Wed Feb 22, 2017
      Citation: Phys. Rev. X 7, 019902 (2017)
      PubDate: 2017-02-22T10:00:00-05:00
      DOI: 10.1103/PhysRevX.7.019902
      Issue No: Vol. 7, No. 1 (2017)
       
  • Publisher’s Note: Computer-Assisted Inverse Design of Inorganic
           Electrides [Phys. Rev. X 7, 011017 (2017)]

    • Authors: Yunwei Zhang; Hui Wang, Yanchao Wang, Lijun Zhang, Yanming Ma
      First page: 019903
      Abstract: Author(s): Yunwei Zhang, Hui Wang, Yanchao Wang, Lijun Zhang, and Yanming Ma
      [Phys. Rev. X 7, 019903] Published Wed Mar 15, 2017
      Citation: Phys. Rev. X 7, 019903 (2017)
      PubDate: 2017-03-15T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.019903
      Issue No: Vol. 7, No. 1 (2017)
       
  • Publisher’s Note: Synchronization in Dynamical Networks of Locally
           Coupled Self-Propelled Oscillators [Phys. Rev. X 7, 011028 (2017)]

    • Authors: Demian Levis; Ignacio Pagonabarraga, Albert Díaz-Guilera
      First page: 019904
      Abstract: Author(s): Demian Levis, Ignacio Pagonabarraga, and Albert Díaz-Guilera
      [Phys. Rev. X 7, 019904] Published Thu Mar 30, 2017
      Citation: Phys. Rev. X 7, 019904 (2017)
      PubDate: 2017-03-30T10:00:00-04:00
      DOI: 10.1103/PhysRevX.7.019904
      Issue No: Vol. 7, No. 1 (2017)
       
 
 
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