Results 11 to 20 of about 630 (239)
The tripartite quantum-memory-assisted entropic uncertainty relation and upper bound on shareability of quantum discord [PDF]
Scientific Reports, 2022 Quantum discord and quantum uncertainty are two important features of the quantum world. In this work, the relation between entropic uncertainty relation and the shareability of quantum discord is studied.
Hazhir Dolatkhah +2 more
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The freezing Rènyi quantum discord. [PDF]
Sci Rep, 2019 AbstractAs a universal quantum character of quantum correlation, the freezing phenomenon is researched by geometry and quantum discord methods, respectively. In this paper, the properties of Rènyi discord is studied for two independent Dimer System coupled to two correlated Fermi-spin environments under the non-Markovian condition.
Li XY +5 more
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Quantum Discord, Thermal Discord, and Entropy Generation in the Minimum Error Discrimination Strategy [PDF]
Entropy, 2019 We study the classical and quantum correlations in the minimum error discrimination (ME) of two non-orthogonal pure quantum states. In particular, we consider quantum discord, thermal discord and entropy generation.
Omar Jiménez +3 more
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Entanglement and quantum discord in the cavity QED models [PDF]
HeliyonWe investigate the quantum correlation between light and matter in bipartite quantum systems, drawing on the Jaynes–Cummings model and the Tavis–Cummings model, which are well-established in cavity quantum electrodynamics.
Hui-hui Miao, Wanshun Li
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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.
Biao-Liang Ye, Xiao-Bin Liang
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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 ...
Chandrashekar Radhakrishnan +2 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 Information Processing, 2018 12 pages, 1 ...
Renato Moreira Angelo, Pedro R Dieguez
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Analysis of Quantum Correlations Obtained Using Local Optimal Universal Asymmetric Cloners [PDF]
Entropy, 2022 We apply the local optimal universal asymmetric cloning machine on an initially pure entangled state of two qubits. As output, we obtain two final states which present quantum correlations.
Cătălina Cîrneci, Iulia Ghiu
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Quantum correlation in a nano-electro-optomechanical system enhanced by an optical parametric amplifier and Coulomb-type interaction [PDF]
Scientific Reports, 2023 In this paper, we investigated the quantum correlation of nano-electro-optomechanical system enhanced by an optical parametric amplifier (OPA) and Coulomb-type interaction. In particular, we consider a hybrid system consisting of a cavity and two charged
Habtamu Dagnaw Mekonnen +3 more
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