Quantum Discord for a Central Two-Qubit System Coupled to an XY Spin Chain with Energy Current

被引：1
|
作者：
Zhong, Feng [1 ]
机构：
[1] Hunan Univ Sci & Engn, Dept Elect Engn, Yongzhou 425100, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2014年 / 53卷 / 01期
关键词：
Quantum discord; Energy current; Two-qubit system; XY spin chain; MODEL;
D O I：
10.1007/s10773-013-1811-0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the quantum discord dynamics of a two-qubit system coupled to an XY spin-chain environment with energy current. We compared dynamical behaviors of quantum discord under different system-environment couplings, the size of the degrees of freedom of the environment, the anisotropy parameter, and the energy current. The results indicate that the energy current can strongly suppress the quantum discord in the weak-coupling region, while it has no obvious effect on the quantum discord in the strong-coupling regime.
引用
收藏
页码：320 / 328
页数：9
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