Results 11 to 20 of about 1,341,408 (264)
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
Bo Li +4 more
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Quantum discord and entropic measures of two relativistic fermions [PDF]
Journal of Physics A: Mathematical and Theoretical, 2022 In the present work, we study the interplay between relativistic effects and quantumness in the system of two relativistic fermions. In particular, we explore entropic measures of quantum correlations and quantum discord before and after application of a
P. Kurashvili, L. Chotorlishvili
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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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Computing quantum discord is NP-complete
New Journal of Physics, 2014 We study the computational complexity of quantum discord (a measure of quantum correlation beyond entanglement), and prove that computing quantum discord is NP-complete.
Yichen Huang
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Dynamics of multipartite quantum correlations under decoherence [PDF]
, 2012 Quantum discord is an optimal resource for the quantification of classical and non-classical correlations as compared to other related measures. Geometric measure of quantum discord is another measure of quantum correlations.
A. Brodutch +98 more
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Study on Non-Commutativity Measure of Quantum Discord
Mathematics, 2019 In this paper, we are concerned with the non-commutativity measure of quantum discord. We first present an explicit expression of the non-commutativity measure of quantum discord in the two-qubit case.
Jin Liang, Chengwei Zhang
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The sudden death and sudden birth of quantum discord. [PDF]
Sci Rep, 2018 The interaction of quantum system and its environment brings out abundant quantum phenomenons. The sudden death of quantum resources, including entanglement, quantum discord and coherence, have been studied from the perspective of quantum breaking ...
Xia W, Hou JX, Wang XH, Liu SY.
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A new entropic quantum correlation measure for adversarial systems [PDF]
Scientific Reports, 2023 Quantum correlation often refers to correlations exhibited by two or more local subsystems under a suitable measurement. These correlations are beyond the framework of classical statistics and the associated classical probability distribution.
Biveen Shajilal +3 more
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The power of one clean qubit in supervised machine learning [PDF]
Scientific Reports, 2023 This paper explores the potential benefits of quantum coherence and quantum discord in the non-universal quantum computing model called deterministic quantum computing with one qubit (DQC1) in supervised machine learning.
Mahsa Karimi +3 more
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