Thermal entanglement and teleportation in a two-qubit Heisenberg XXZ chain with different Dzyaloshinskii-Moriya interactions

被引：11

作者：

Qin, Meng ^{[1
]}

Bai, Zhong ^{[1
]}

Li, Biao-Yan ^{[1
]}

Lin, Jin-Shang ^{[1
]}

机构：

[1] PLA Univ Sci & Technol, Inst Sci, Dept Appl Math & Phys, Nanjing 211101, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2011年 / 284卷 / 12期

关键词：

XXZ chain; Different Dzyaloshinskii-Moriya interaction; Teleportation;

D O I：

10.1016/j.optcom.2011.01.064

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the thermal output entanglement and teleportation in a two qubit Heisenberg XXZ chain with different Dzyaloshinskii-Moriya (DM) interactions. The analytical expressions of the output entanglement and the average fidelity are obtained for this model. We find the entanglement of replica states will be induced by some large value of D-z and the output entanglement exists for the case of J(z)<-1. The influences of the different DM interactions on the fidelity of teleportation are studied. We show that by introducing the x-component DM interaction, the average fidelity F-A can reach its maximum value 1. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3149 / 3153

页数：5

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