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Entanglement Theory Quantum Correlations Quantum Foundations

Quantum correlations in spin models

arXiv
Authors: Guo-Feng Zhang, Heng Fan, Ai-Ling Ji, Zhao-Tan Jiang, Ahmad Abliz, Wu-Ming Liu

Year

2011

Paper ID

8816

Status

Preprint

Abstract Read

~2 min

Abstract Words

87

Citations

N/A

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 use of measurement-induced disturbance (MID) [Phys. Rev. A, 77, 022301 (2008)] and geometric measure of quantum discord (GQD) [Phys. Rev. Lett. 105, 190502 (2010)]. Their dependencies on external magnetic field, spin-spin coupling, and Dzyaloshinski-Moriya (DM) interaction are presented in detail. We also compare Bell nonlocality, entanglement measured by concurrence, MID and GQD and illustrate their different characteristics.

Why This Paper Matters

  • This paper contributes to the Quantum Foundations research area in the Quantum Articles archive.
  • It adds a 2011 reference point for readers tracking recent quantum research.
  • Bell nonlocality, entanglement and nonclassical correlations are different aspects of quantum correlations for a given state.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1105.2866 [2] arXiv https://arxiv.org/abs/1105.2866 [3] Publisher https://arxiv.org/abs/1105.2866

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