Results 21 to 30 of about 13,277 (240)
Gaussian Quantum Discord [PDF]
Physical Review Letters, 2010 4 pages, 2 figures, new version, typos ...
P. Giorda, M. Paris
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Multipartite Generalization of Quantum Discord [PDF]
Physical Review Letters, 2020 A generalization of quantum discord to multipartite systems is proposed. A key feature of our formulation is its consistency with the conventional definition of discord in bipartite systems. It is by construction zero only for systems with classically correlated subsystems and is a non-negative quantity, giving a measure of the total non-classical ...
Radhakrishnan, Chandrashekar +2 more
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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 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
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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QUANTUM DISCORD, DECOHERENCE AND QUANTUM PHASE TRANSITION [PDF]
International Journal of Modern Physics B, 2012 Quantum discord is a more general measure of quantum correlations than entanglement and has been proposed as a resource in certain quantum information processing tasks. The computation of discord is mostly confined to two-qubit systems for which an analytical calculational scheme is available.
Bose, Indrani, Pal, Amit Kumar
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Squeezing of Primordial Gravitational Waves as Quantum Discord
Universe, 2020 We investigate the squeezing of primordial gravitational waves (PGWs) in terms of quantum discord. We construct a classical state of PGWs without quantum discord and compare it with the Bunch−Davies vacuum.
Akira Matsumura, Yasusada Nambu
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Quantum Information Processing, 2018 12 pages, 1 ...
P. R. Dieguez, R. M. Angelo
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