Results 31 to 40 of about 13,882 (271)
Quantum discord for multiqubit systems [PDF]
Physical Review A, 2021 We evaluate analytically the quantum discord for a large family of multiqubit states. It is interesting to note that the quantum discord of three-qubits and five-qubits is the same, as is the quantum discord of two-qubits and six-qubits. We discover that the quantum discord of this family states can be concluded into three categories.
Shao-Ming Fei +5 more
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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 ...
Tim Byrnes +4 more
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Quantum Information Processing, 2018 12 pages, 1 ...
P. R. Dieguez, R. M. Angelo
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Quantum Discord Cannot Be Shared
Physical Review Letters, 2013 5 pages, 3 ...
Alexander Streltsov, Wojciech H. Zurek
openalex +6 more sources
Diagonal quantum discord [PDF]
Journal of Physics A: Mathematical and Theoretical, 2019 15 pages, 3 figures; published ...
Zi-Wen Liu, Ryuji Takagi, Seth Lloyd
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Non-commutativity measure of quantum discord. [PDF]
Sci Rep, 2016 AbstractQuantum discord is a manifestation of quantum correlations due to non-commutativity rather than entanglement. Two measures of quantum discord by the amount of non-commutativity via the trace norm and the Hilbert-Schmidt norm respectively are proposed in this paper.
Guo Y.
europepmc +6 more sources
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
doaj +1 more source
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 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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Foundations of Quantum Discord [PDF]
, 2017 This paper summarizes the basics of the notion of quantum discord and how it relates to other types of correlations in quantum physics. We take the fundamental information theoretic approach and illustrate our exposition with a number of simple examples.
Vlatko Vedral +2 more
openaire +3 more sources