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Intrinsic decoherence effects on correlated coherence and quantum discord in XXZ Heisenberg model
Optical and quantum electronics, 2022Spin qubits are at the heart of technological advances in quantum processors and offer an excellent framework for quantum information processing. This work characterizes the time evolution of coherence and nonclassical correlations in a two-spin XXZ ...
Z. Dahbi, M. Oumennana, M. Mansour
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Quantum Information Processing, 2021
A two-qubit Heisenberg XYZ model with Dzyaloshinsky–Moriya (DM) and Kaplan–Shekhtman–Entin-Wohlman–Aharony (KSEA) interactions is considered at thermal equilibrium. Analytical formulas are derived for the local quantum uncertainty (LQU) and local quantum
A. Fedorova, M. Yurischev
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A two-qubit Heisenberg XYZ model with Dzyaloshinsky–Moriya (DM) and Kaplan–Shekhtman–Entin-Wohlman–Aharony (KSEA) interactions is considered at thermal equilibrium. Analytical formulas are derived for the local quantum uncertainty (LQU) and local quantum
A. Fedorova, M. Yurischev
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Global quantum discord in the Lipkin–Meshkov–Glick model at zero and finite temperatures
Journal of Physics: Condensed Matter, 2021We study the global quantum discord (GQD) in the Lipkin–Meshkov–Glick (LMG) model at zero and finite temperatures, in which all spins are mutually interacted and introduced in an external magnetic field (denoted by h). We confirm that the high coordinate
Jia Bao, Yanhong Liu, Bin Guo
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Laser Physics Letters, 2020
The one-qubit teleportation protocol is one of the most well-known topics of quantum information theory. Indeed, the goal of this quantum protocol is to teleport an arbitrary quantum state.
M. R. Pourkarimi, S. Haddadi
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The one-qubit teleportation protocol is one of the most well-known topics of quantum information theory. Indeed, the goal of this quantum protocol is to teleport an arbitrary quantum state.
M. R. Pourkarimi, S. Haddadi
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Quantum discord of the Werner state in noninertial frames
Physica Scripta, 2020Using the single-mode approximation we study the quantum correlations of a free Dirac field on the Werner state in the noninertial frame. We present analytical quantum discord D and its geometric measurement DG.
M. A. M. Sanchez, Guo-Hua Sun, S. Dong
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Quantum Discord-Breaking Channels
Chinese Physics Letters, 2013Through comparisons with an entanglement breaking (EB) channel, we characterize the local quantum channels that destroy quantum correlations, especially for quantum discord, and give a detailed description of a discord-breaking (DB) channel. We prove that the quantum discord can be broken if and only if the local quantum channel is a commutativity ...
Chun-Mei Yao +3 more
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Phonon-mediated quantum discord in dark solitons
The European Physical Journal Plus, 2019We investigate the quantum correlation dynamics in dark-soliton qubits with a special attention to quantum discord. Recently, dark-soliton qubit exhibiting appreciably long lifetime is proved to be an excellent candidate for information processing ...
M. I. Shaukat +4 more
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Quantum Discord of Certain Two-Qubit States
International Journal of Theoretical Physics, 2019Quantum discord is an effective measure of quantum correlation introduced by Olliver and Zurek. We evaluate analytically the quantum discord for a large family of non-X-states.
Jianming Zhou, Xiaoli Hu, N. Jing
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Global Quantum Discord and Entanglement in two Coupled Double Quantum Dots AlGaAs/GaAs
International Journal of Theoretical Physics, 2023H. Ait Mansour, M. Faqir, M. El Baz
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Quantum Discord in Quantum Communication Protocols
2017We review an operational interpretation of quantum discord by quantifying it as the difference in the yield of the noisy and noiseless fully quantum Slepian-Wolf (FQSW) protocol and the closely related Mother protocol. The fully quantum Slepian-Wolf protocol is the most general form of unidirectional and bipartite quantum communication protocols and ...
Animesh Datta, Vaibhav Madhok
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