Entanglement dynamics of a Heisenberg chain with Dzyaloshinskii-Moriya interaction

被引：1
|
作者：
Zheng Qiang [1 ,3 ]
Zhang Xiao-Ping [1 ]
Zhi Qi-Jun [2 ]
Ren Zhong-Zhou [1 ]
机构：
[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
[2] Guizhou Normal Univ, Sch Phys & Elect, Guiyang 550001, Peoples R China
[3] Guizhou Normal Univ, Sch Math & Comp Sci, Guiyang 550001, Peoples R China
来源：
CHINESE PHYSICS B | 2009年 / 18卷 / 08期
基金：
中国国家自然科学基金;
关键词：
entanglement sudden birth; entanglement amplification; DM interaction; SUDDEN-DEATH; THERMAL ENTANGLEMENT; STATE; GENERATION; SCHEME;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
This paper investigates the entanglement dynamics of the system, composed of two qubits A and B with Heisenberg XX spin interactation. There is a third controller qubit C, which only has Dzyaloshinskii-Moriya (DM) spin-orbit interaction with the qubit B. It is found that depending on the initial state of the controller qubit C and DM interaction, the entanglement of the system displays amplification and sudden birth effects. These effects indicate that one can control the entanglement of the system, which may be helpful for quantum information processing.
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页码：3210 / 3214
页数：5
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