Bell violation for the thermal states of an XXZ spin chain with Dzialoshiski-Moriya interaction

被引：0
|
作者：
MA XiaoSan 1 & WANG AnMin 2 1 School of Electric Engineering and Information
2 Department of Modern Physics
机构：
来源：
Science China(Physics,Mechanics & Astronomy) | 2010年 / 11期
基金：
中国国家自然科学基金;
关键词：
Bell violation; threshold temperatures; DM interaction;
D O I：
暂无
中图分类号：
O413.1 [量子力学（波动力学、矩阵力学）];
学科分类号：
070205 ; 0809 ;
摘要：
The effect of Dzialoshiski-Moriya (DM) interaction on the violation of Bell inequality for thermal states of interacting qubits via a two-qubit XXZ spin chain is investigated.Our results imply that the DM interaction and anisotropy taking a large positive value can enhance the Bell violation and improve the threshold temperatures of it.By the comparison between the Bell violation and thermal entanglement,we find that the threshold temperatures of thermal entanglement are higher than those of the Bell violation.This implies that some states are entangled but the Bell inequality is not violated.
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页码：2074 / 2079
页数：6
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