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  Subjects -> PHYSICS (Total: 737 journals)
    - ELECTRICITY AND MAGNETISM (7 journals)
    - MECHANICS (19 journals)
    - NUCLEAR PHYSICS (44 journals)
    - OPTICS (84 journals)
    - PHYSICS (537 journals)
    - SOUND (17 journals)
    - THERMODYNAMICS (29 journals)

PHYSICS (537 journals)            First | 1 2 3 4 5 6 | Last

International Journal of Plasticity     Hybrid Journal   (Followers: 6)
International Journal of Quantum Information     Hybrid Journal  
International Journal of Self-Propagating High-Temperature Synthesis     Hybrid Journal   (Followers: 2)
International Journal of Solids and Structures     Hybrid Journal   (Followers: 9)
International Journal of Surface Science and Engineering     Hybrid Journal   (Followers: 7)
International Journal of Theoretical and Applied Multiscale Mechanics     Hybrid Journal   (Followers: 2)
International Journal of Theoretical Physics     Hybrid Journal   (Followers: 2)
International Journal of Thermal Sciences     Hybrid Journal   (Followers: 4)
Inverse Problems     Hybrid Journal   (Followers: 4)
IOP Conference Series: Materials Science and Engineering     Open Access   (Followers: 3)
ISRN Astronomy and Astrophysics     Open Access   (Followers: 11)
ISRN Condensed Matter Physics     Open Access  
ISRN High Energy Physics     Open Access  
ISRN Mathematical Physics     Open Access  
ISRN Nanotechnology     Open Access  
ISRN Spectroscopy     Open Access  
Izvestiya Atmospheric and Oceanic Physics     Hybrid Journal   (Followers: 3)
Izvestiya, Physics of the Solid Earth     Hybrid Journal   (Followers: 4)
Japanese Journal of Applied Physics     Full-text available via subscription   (Followers: 3)
JCP : BioChemical Physics     Hybrid Journal  
JETP Letters     Hybrid Journal   (Followers: 3)
Journal of Adhesion Science and Technology     Hybrid Journal   (Followers: 6)
Journal of Advances in Physics     Open Access   (Followers: 1)
Journal of Applied Mathematics and Mechanics     Full-text available via subscription   (Followers: 5)
Journal of Applied Mechanics and Technical Physics     Hybrid Journal   (Followers: 3)
Journal of Applied Physics     Hybrid Journal   (Followers: 152)
Journal of Applied Remote Sensing     Full-text available via subscription   (Followers: 10)
Journal of Applied Spectroscopy     Hybrid Journal   (Followers: 7)
Journal of Astrophysics     Open Access  
Journal of Astrophysics and Astronomy     Open Access   (Followers: 10)
Journal of Basic and Applied Physics     Open Access   (Followers: 1)
Journal of Building Physics     Hybrid Journal   (Followers: 1)
Journal of Chromatographic Science     Hybrid Journal   (Followers: 20)
Journal of Complex Networks     Hybrid Journal  
Journal of Composite Materials     Hybrid Journal   (Followers: 35)
Journal of Computational Methods in Physics     Open Access  
Journal of Computational Physics     Hybrid Journal   (Followers: 145)
Journal of Contemporary Physics (Armenian Academy of Sciences)     Hybrid Journal   (Followers: 1)
Journal of Dynamic Systems, Measurement, and Control     Full-text available via subscription   (Followers: 7)
Journal of Elasticity     Hybrid Journal   (Followers: 2)
Journal of Electrical Bioimpedance     Full-text available via subscription   (Followers: 2)
Journal of Electron Spectroscopy and Related Phenomena     Hybrid Journal  
Journal of Electronic Materials     Hybrid Journal   (Followers: 5)
Journal of Electronics Cooling and Thermal Control     Open Access   (Followers: 1)
Journal of Engineering Materials and Technology     Full-text available via subscription   (Followers: 13)
Journal of Engineering Physics and Thermophysics     Hybrid Journal  
Journal of Experimental and Theoretical Physics     Hybrid Journal   (Followers: 3)
Journal of Fire Sciences     Hybrid Journal   (Followers: 1)
Journal of Geometry and Physics     Full-text available via subscription  
Journal of Geophysical Research : Space Physics     Full-text available via subscription   (Followers: 14)
Journal of Gravity     Open Access  
Journal of High Energy Physics     Hybrid Journal   (Followers: 2)
Journal of Hyperspectral Remote Sensing     Open Access  
Journal of Information Display     Hybrid Journal  
Journal of Intelligent Material Systems and Structures     Hybrid Journal   (Followers: 3)
Journal of Lightwave Technology     Hybrid Journal   (Followers: 6)
Journal of Low Frequency Noise, Vibration and Active Control     Full-text available via subscription   (Followers: 6)
Journal of Luminescence     Hybrid Journal   (Followers: 2)
Journal of Magnetic Resonance     Hybrid Journal   (Followers: 4)
Journal of Materials Engineering and Performance     Hybrid Journal   (Followers: 6)
Journal of Materials Science     Hybrid Journal   (Followers: 16)
Journal of Materials Science : Materials in Electronics     Hybrid Journal   (Followers: 4)
Journal of Materials Science : Materials in Medicine     Hybrid Journal   (Followers: 6)
Journal of Mathematical Fluid Mechanics     Hybrid Journal   (Followers: 4)
Journal of Mathematical Physics     Hybrid Journal   (Followers: 3)
Journal of Medical Ultrasonics     Hybrid Journal   (Followers: 2)
Journal of Micro/Nanolithography MEMS and MOEMS     Hybrid Journal   (Followers: 1)
Journal of Modern Physics     Open Access   (Followers: 2)
Journal of Molecular Spectroscopy     Hybrid Journal   (Followers: 6)
Journal of Motor Behavior     Hybrid Journal   (Followers: 6)
Journal of Multiscale Modeling     Hybrid Journal  
Journal of Nanophotonics     Full-text available via subscription   (Followers: 4)
Journal of Neutron Research     Hybrid Journal  
Journal of Nondestructive Evaluation     Hybrid Journal   (Followers: 3)
Journal of Nonlinear Dynamics     Open Access  
Journal of Nonlinear Mathematical Physics     Hybrid Journal   (Followers: 1)
Journal of Optics     Hybrid Journal   (Followers: 2)
Journal of Physical and Chemical Reference Data     Hybrid Journal   (Followers: 2)
Journal of Physical Chemistry B     Full-text available via subscription   (Followers: 25)
Journal of Physical Chemistry C     Full-text available via subscription   (Followers: 20)
Journal of Physical Oceanography     Full-text available via subscription   (Followers: 8)
Journal of Physical Organic Chemistry     Hybrid Journal   (Followers: 7)
Journal of Physics A : Mathematical and Theoretical     Hybrid Journal   (Followers: 3)
Journal of Physics and Chemistry of Solids     Hybrid Journal   (Followers: 4)
Journal of Physics D : Applied Physics     Hybrid Journal   (Followers: 11)
Journal of Physics: Condensed Matter     Hybrid Journal   (Followers: 7)
Journal of Physics: Conference Series     Open Access   (Followers: 3)
Journal of Plasma Physics     Hybrid Journal   (Followers: 4)
Journal of Polymer Science Part B: Polymer Physics     Hybrid Journal   (Followers: 22)
Journal of Porous Materials     Hybrid Journal   (Followers: 3)
Journal of Porphyrins and Phthalocyanines     Hybrid Journal   (Followers: 2)
Journal of Quantitative Spectroscopy and Radiative Transfer     Hybrid Journal  
Journal of Reinforced Plastics and Composites     Hybrid Journal   (Followers: 4)
Journal of Research in Physics     Open Access  
Journal of Rheology     Full-text available via subscription   (Followers: 4)
Journal of Romance Studies     Full-text available via subscription   (Followers: 2)
Journal of Sandwich Structures and Materials     Hybrid Journal   (Followers: 1)
Journal of Scientific Research     Open Access   (Followers: 1)
Journal of Semiconductors     Full-text available via subscription   (Followers: 2)
Journal of Sensors     Open Access   (Followers: 7)

  First | 1 2 3 4 5 6 | Last

Journal Cover International Journal of Quantum Information
   Journal TOC RSS feeds Export to Zotero Follow    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
     ISSN (Print) 0219-7499 - ISSN (Online) 1793-6918
     Published by World Scientific Homepage  [114 journals]   [SJR: 0.588]   [H-I: 18]
  • Chemical bond and entanglement of electrons in the hydrogen molecule
    • Authors: Nikos Iliopoulos et al
      Abstract: International Journal of Quantum Information, Ahead of Print. We theoretically investigate the quantum correlations (in terms of concurrence of indistinguishable electrons) in a prototype molecular system (hydrogen molecule). With the assistance of the standard approximations of the linear combination of atomic orbitals and the configuration interaction methods we describe the electronic wavefunction of the ground state of the H2 molecule. Moreover, we managed to find a rather simple analytic expression for the concurrence (the most used measure of quantum entanglement) of the two electrons when the molecule is in its lowest energy. We have found that concurrence does not really show any relation to the construction of the chemical bond.
      PubDate: Thu, 28 Aug 2014 12:06:51 GMT
       
  • Comparative study of quantum discord and geometric discord for generic
           bipartite states
    • Authors: Bao Liu et al
      Abstract: International Journal of Quantum Information, Ahead of Print. The characterization of quantum discord (QD) and geometric discord (GD) has mostly concentrated on two-qubit states since the minimization in both discords is a daunting task for high-dimensional states. Numerical calculations of both discords are carried out for a generic bipartite state. When one-dimensional orthogonal projectors for a local measurement on n-dimensional Hilbert space are realized by the generators and the Euler angles of SU(n), the optimal measurements have a figure of merit that includes n(n - 1) Euler parameters. As an representative example, such projectors and two kinds of algorithms are used to estimate both discords for two-qutrit mixed states in recent literature. The generalized negativity as a measure of quantum entanglement is calculated for reference purposes. For those states with one parameter the discords and the negativity respectively display the nonlinear and the linear function of the parameter, with different turning points. However, they are positively correlated in the suitable ranges of the parameter for those states. The hierarchy of those quantities is discussed as well. Those shed new light on the understanding of QDs and quantum entanglement of mixed states in high-dimensions.
      PubDate: Mon, 25 Aug 2014 07:12:30 GMT
       
  • If time is a local observable, then Hawking radiation is unitary
    • Authors: Hrvoje Nikolić
      Abstract: International Journal of Quantum Information, Ahead of Print. In the usual formulation of quantum theory, time is a global classical evolution parameter, not a local quantum observable. On the other hand, both canonical quantum gravity (which lacks fundamental time-evolution parameter) and the principle of spacetime covariance (which insists that time should be treated on an equal footing with space) suggest that quantum theory should be slightly reformulated, in a manner that promotes time to a local observable. Such a reformulated quantum theory is unitary in a more general sense than the usual quantum theory. In particular, this promotes the non-unitary Hawking radiation to a unitary phenomenon, which avoids the black-hole information paradox.
      PubDate: Tue, 19 Aug 2014 11:39:12 GMT
       
  • Reflectivity and transmissivity of a cavity coupled to a nanoparticle
    • Authors: M. A. Khan et al
      Abstract: International Journal of Quantum Information, Ahead of Print. Any dielectric nanoparticle moving inside an optical cavity generates an optomechanical interaction. In this paper, we theoretically analyze the light scattering of an optomechanical cavity which strongly interacts with a dielectric nanoparticle. The cavity is driven by an external laser field. This interaction gives rise to different dynamics that can be used to cool, trap and levitate nanoparticle. We analytically calculate reflection and transmission rate of the cavity field, and study the time evolution of the intracavity field, momentum and position of the nanoparticle. We find the nanoparticle occupies a discrete position inside the cavity. This effect can be exploited to separate nanoparticle and couplings between classical particles and quantized fields.
      PubDate: Wed, 23 Jul 2014 03:07:32 GMT
       
  • Measurement-based quantum computation cannot avoid byproducts
    • Authors: Tomoyuki Morimae
      Abstract: International Journal of Quantum Information, Ahead of Print. In the circuit model of quantum computation, a desired unitary gate can be implemented deterministically, whereas in the measurement-based model the unitary gate is implemented up to a byproduct operator. In order to compensate byproducts, following measurement angles must be adjusted, or classical results must be corrected. Such a feed-forwarding requires some classical processing and tuning of the measurement device, which cause the delay of computation and the additional decoherence. We show that if we respect the no-signaling principle, which is one of the most fundamental principles in physics, byproducts cannot be avoided in measurement-based quantum computation. Furthermore, we also show by using the idea of the quantum error correcting code that due to the no-signaling principle, not all byproducts are allowed in measurement-based quantum computation.
      PubDate: Wed, 16 Jul 2014 08:29:57 GMT
       
  • Computational properties of a fractal medium
    • Authors: Vlad Sergiu Bîrlescu et al
      Abstract: International Journal of Quantum Information, Volume 12, Issue 04, June 2014. A fractal medium is defined and its computational properties (bistability, reproduction itself, capacity to memorize, self-similarity, polarization, information communication, etc.) are presented and argued. As it is well known, the quantum medium is the base of the theoretical fundamentation of the quantum computer. We prove that the fractal medium is an extension of the quantum medium. Hence, the fractal computer can be defined as generalization of the quantum computer.
      PubDate: Mon, 07 Jul 2014 10:02:49 GMT
       
  • Quantum information in communication and imaging
    • Authors: David S. Simon et al
      Abstract: International Journal of Quantum Information, Volume 12, Issue 04, June 2014. A brief introduction to quantum information theory in the context of quantum optics is presented. After presenting the fundamental theoretical basis of the subject, experimental evaluation of entanglement measures are discussed, followed by applications to communication and imaging.
      PubDate: Mon, 07 Jul 2014 10:02:40 GMT
       
  • Selective entanglement in a two-mode optomechanical system
    • Authors: Neha Aggarwal et al
      Abstract: International Journal of Quantum Information, Volume 12, Issue 04, June 2014. We analyze an optomechanical system formed by a mechanical mode and the two optical modes of an optomechanical cavity for the realization of a strongly quantum correlated three-mode system. We show that the steady state of the system shows three possible bipartite continuous variable (CV) entanglements in an experimentally accessible parameter regime, which are robust against temperature. We further show that selective entanglement between the mechanical mode and any of the two optical modes is also possible by the proper choice of the system parameters. Such a two-mode optomechanical system can be used for the realization of CV quantum information interfaces and networks.
      PubDate: Mon, 07 Jul 2014 10:02:18 GMT
       
  • The physics of quantum computation
    • Authors: G. Falci et al
      Abstract: International Journal of Quantum Information, Volume 12, Issue 04, June 2014. Quantum computation has emerged in the past decades as a consequence of down-scaling of electronic devices to the mesoscopic regime and of advances in the ability of controlling and measuring microscopic quantum systems. Quantum computation has many interdisciplinary aspects, ranging from physics and chemistry to mathematics and computer science. In this paper, we focus on physical hardware, present day challenges and future directions for design of quantum architectures.
      PubDate: Mon, 07 Jul 2014 10:02:15 GMT
       
  • CNOT-based design and query management in quantum relational databases
    • Authors: Amor Gueddana et al
      Abstract: International Journal of Quantum Information, Volume 12, Issue 04, June 2014. In this work, we propose a complete design of a quantum relational multi-tables database. We illustrate how to perform basic and advanced queries to insert, update, delete and select records from single or joined digitized tables. A suggestion of a Quantum Query Language (QQL) is then addressed and we illustrate for a simple quantum database how QQL performs. We highlight the used scheme allowing to traduce the QQL semantics to the corresponding CNOT-based implementation and we underline the evolution of the amplitude of probability of the superposed states contained in the tables.
      PubDate: Mon, 07 Jul 2014 10:02:13 GMT
       
  • Quantum codes over rings
    • Authors: Kenza Guenda et al
      Abstract: International Journal of Quantum Information, Volume 12, Issue 04, June 2014. This paper considers the construction of quantum error correcting codes from linear codes over finite commutative Frobenius rings. We extend the Calderbank–Shor–Steane (CSS) construction to these rings. Further, quantum codes are extended to matrix product codes. Quantum codes over 𝔽pk are also obtained from linear codes over rings using the generalized Gray map.
      PubDate: Mon, 07 Jul 2014 10:02:11 GMT
       
  • Environment-induced mixing processes in quantum walks
    • Authors: sales@wspc.com.sg (Lauri Lehman)
      Abstract: International Journal of Quantum Information, Ahead of Print. The mixing process of discrete-time quantum walks on one-dimensional lattices is revisited in a setting where the walker is coupled to an environment, and the time evolution of the walker and the environment is unitary. The mixing process is found to be incomplete, in the sense that the walker does not approach the maximally mixed state indefinitely, but the distance to the maximally mixed state saturates to some finite value depending on the size of the environment. The quantum speedup of mixing time is investigated numerically as the size of the environment decreases from infinity to a finite value. The mixing process in this unitary setting can be explained by interpreting it as an equilibration process in a closed quantum system, where subsystems can exhibit equilibration even when the entropy of the total system remains zero.
      PubDate: Fri, 06 Jun 2014 07:22:10 GMT
       
  • New quantum MDS codes
    • Authors: sales@wspc.com.sg (Guanghui Zhang)
      Abstract: International Journal of Quantum Information, Ahead of Print. In this paper, we construct two classes of new quantum maximum-distance-separable (MDS) codes with parameters , where q is an odd prime power with q ≡ 3 (mod 4) and ; [[8(q - 1),8(q - 1) - 2d + 2,d]]q, where q is an odd prime power with the form q = 8t - 1 (t is an even positive integer) and . Comparing the parameters with all known quantum MDS codes, the quantum MDS codes exhibited here have minimum distances bigger than the ones available in the literature.
      PubDate: Fri, 06 Jun 2014 07:22:05 GMT
       
  • Limitations on quantum dimensionality reduction
    • Authors: sales@wspc.com.sg (Aram W. Harrow)
      Abstract: International Journal of Quantum Information, Ahead of Print. The Johnson–Lindenstrauss Lemma is a classic result which implies that any set of n real vectors can be compressed to O(logn) dimensions while only distorting pairwise Euclidean distances by a constant factor. Here we consider potential extensions of this result to the compression of quantum states. We show that, by contrast with the classical case, there does not exist any distribution over quantum channels that significantly reduces the dimension of quantum states while preserving the 2-norm distance with high probability. We discuss two tasks for which the 2-norm distance is indeed the correct figure of merit. In the case of the trace norm, we show that the dimension of low-rank mixed states can be reduced by up to a square root, but that essentially no dimensionality reduction is possible for highly mixed states.
      PubDate: Wed, 04 Jun 2014 03:58:56 GMT
       
  • EXPLICIT RELATION BETWEEN ALL LOWER BOUND TECHNIQUES FOR QUANTUM QUERY
           COMPLEXITY
    • Authors: LOÏCK MAGNIN et al
      Abstract: International Journal of Quantum Information, Volume 0, Issue 0, Ahead of Print.
      PubDate: Mon, 25 Nov 2013 06:28:10 GMT
       
 
 
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