Quantum correlations in spin models

Guo Feng Zhang; Heng Fan; Ai Ling Ji; Zhao Tan Jiang; Ahmad Abliz; Wu Ming Liu

doi:10.1016/j.aop.2011.05.002

Quantum correlations in spin models

Guo Feng Zhang^*, Heng Fan, Ai Ling Ji, Zhao Tan Jiang, Ahmad Abliz, Wu Ming Liu

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物理学院

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40 引用（Scopus）

摘要

Bell nonlocality, entanglement and nonclassical correlations are different aspects of quantum correlations for a given state. There are many methods to measure nonclassical correlations. In this paper, nonclassical correlations in two-qubit spin models are measured by the use of measurement-induced disturbance (MID) [S. Luo, Phys. Rev. A 77 (2008) 022301] and geometric measure of quantum discord (GQD) [B. Dakić, V. Vedral, C. Brukner, Phys. Rev. Lett. 105 (2010) 190502]. Their dependences on external magnetic field, spin-spin coupling, and the Dzyaloshinskii-Moriya (DM) interaction are presented in detail. We also compare Bell nonlocality, entanglement measured by concurrence, MID and GQD and illustrate their different characteristics.

源语言	英语
页（从-至）	2694-2701
页数	8
期刊	Annals of Physics
卷	326
期	10
DOI	https://doi.org/10.1016/j.aop.2011.05.002
出版状态	已出版 - 10月 2011

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title = "Quantum correlations in spin models",

abstract = "Bell nonlocality, entanglement and nonclassical correlations are different aspects of quantum correlations for a given state. There are many methods to measure nonclassical correlations. In this paper, nonclassical correlations in two-qubit spin models are measured by the use of measurement-induced disturbance (MID) [S. Luo, Phys. Rev. A 77 (2008) 022301] and geometric measure of quantum discord (GQD) [B. Daki{\'c}, V. Vedral, C. Brukner, Phys. Rev. Lett. 105 (2010) 190502]. Their dependences on external magnetic field, spin-spin coupling, and the Dzyaloshinskii-Moriya (DM) interaction are presented in detail. We also compare Bell nonlocality, entanglement measured by concurrence, MID and GQD and illustrate their different characteristics.",

keywords = "Bell nonlocality, Entanglement, Measurement-induced disturbance (MID), Spin model",

author = "Zhang, {Guo Feng} and Heng Fan and Ji, {Ai Ling} and Jiang, {Zhao Tan} and Ahmad Abliz and Liu, {Wu Ming}",

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AU - Ji, Ai Ling

AU - Jiang, Zhao Tan

AU - Abliz, Ahmad

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Quantum correlations in spin models

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