Quantum and classical correlations in the anisotropic XY Model with a single defect

被引：0

作者：

Cheng, W. W. ^{[1
,2
]}

Shan, C. J. ^{[2
]}

Sheng, Y. B. ^{[1
]}

Gong, L. Y. ^{[1
]}

Zhao, S. M. ^{[1
]}

Liu, J. -M. ^{[3
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Inst Signal Proc & Transmiss, Nanjing 210093, Jiangsu, Peoples R China

[2] Hubei Normal Univ, Dept Phys, Huangshi 435002, Peoples R China

[3] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2013年 / 54卷

关键词：

Quantum correlation; XY model; Defect; SYSTEMS; ENTANGLEMENT; DISCORD;

D O I：

10.1016/j.physe.2013.05.026

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigate the quantum and classical pairwise correlations in the one-dimensional anisotropic XY spin chain with a single defect. The rigorous analysis and numerical results reveal that the quantum discord and classical correlation in different quantum phases present different responses to the defect. In particular, we show that the non-local long-range quantum discord can be modified by a local control of the defect under ferromagnetic phase in such system. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：72 / 77

页数：6

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