Results 41 to 50 of about 1,354,711 (291)
Gaussian Quantum Discord [PDF]
Physical Review Letters, 2010 4 pages, 2 figures, new version, typos ...
P. Giorda, M. Paris
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Quantum discord: a measure of the quantumness of correlations. [PDF]
Physical Review Letters, 2001 Two classically identical expressions for the mutual information generally differ when the systems involved are quantum. This difference defines the quantum discord. It can be used as a measure of the quantumness of correlations.
Harold Ollivier, W. Zurek
semanticscholar +1 more source
Sharma–Mittal quantum discord [PDF]
Quantum Information Processing, 2019 We demonstrate a generalization of quantum discord using a generalized definition of von-Neumann entropy, which is Sharma-Mittal entropy; and the new definition of discord is called Sharma-Mittal quantum discord. Its analytic expressions are worked out for two qubit quantum states as well as Werner, isotropic, and pointer states as special cases. The R{
Souma Mazumdar +2 more
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Monogamy properties of quantum correlations in neutrino oscillations
European Physical Journal C: Particles and Fields, 2023 The monogamy relation of quantum states has limited the shareability properties of quantum resources in multiparty quantum systems. It plays a vital role in information distribution and transformation over many sites in quantum communications.
Guang-Jie Wang +4 more
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Quantum coherence and geometric quantum discord [PDF]
Physics Reports, 2017 Quantum coherence and quantum correlations are of fundamental and practical significance for the development of quantum mechanics.They are also cornerstones of quantum computation and quantum communication theory. Searching physically meaningful and mathematically rigorous quantifiers of them are long-standing concerns of the community of quantum ...
Ming‐Liang Hu +5 more
semanticscholar +4 more sources
Quantum discord as a resource for quantum cryptography. [PDF]
Sci Rep, 2014 Quantum discord is the minimal bipartite resource which is needed for a secure quantum key distribution, being a cryptographic primitive equivalent to non-orthogonality. Its role becomes crucial in device-dependent quantum cryptography, where the presence of preparation and detection noise (inaccessible to all parties) may be so strong to prevent the ...
Pirandola S.
europepmc +5 more sources
Composite Discordant States and Quantum Darwinism. [PDF]
Entropy (Basel), 2022 The framework of Quantum Darwinism strives at characterizing the quantum-to-classical transition by introducing the concept of redundancy of information—as measured by Mutual Information—that a set of observers would acquire on the state of a physical system of interest.
Ryan E, Paternostro M.
europepmc +7 more sources
QUANTUM DISCORD AND QUANTUM COMPUTING — AN APPRAISAL [PDF]
International Journal of Quantum Information, 2011 We discuss models of computing that are beyond classical. The primary motivation is to unearth the cause of non-classical advantages in computation. Completeness results from computational complexity theory lead to the identification of very disparate problems, and offer a kaleidoscopic view into the realm of quantum enhancements in computation ...
Datta, A, Shaji, A
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Discording Power of Quantum Evolutions [PDF]
Physical Review Letters, 2013 accepted for publication in Physical Review ...
Galve F +3 more
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Discord, Quantum Knowledge and Private Communications [PDF]
, 2017 In this brief review, we discuss the role that quantum correlations, as quantified by quantum discord, play in two interesting settings. The first one is discerning which unitaries have been applied on a quantum system, by taking advantage of knowledge regarding its initial configuration. Here discord captures the "quantum" component of this knowledge,
Mile Gu, Stefano Pirandola
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