Entanglement dynamics of three-qubit coupled to an XY spin chain at finite temperature with three-site interaction

被引：0
|
作者：
J. L. Guo
H. S. Song
机构：
[1] Hebei University of Technology,Department of Applied Physics
[2] School of physics and optoelectronic technology,undefined
[3] Dalian University of Technology,undefined
来源：
The European Physical Journal D | 2011年 / 61卷
关键词：
Spin Chain; Quantum Phase Transition; Entanglement Dynamic; Entanglement Evolution; Multipartite Entanglement;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The entanglement dynamics of three-qubit states under an XY spin chain at finite temperature with three-site interaction is investigated. It is shown that the three-site interaction does not affect the behavior of quantum phase transition (QPT) induced by the external magnetic field and does not induce new critical regions in the XY model. In addition, concerned with the effect of the three-site interaction on the entanglement evolution, we find the three-site interaction can not only enhance but also suppress the decay of the entanglement between the three-qubit system, which depends on the initial states of the system and the parameters related with the environmental spin chain.
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页码：791 / 796
页数：5
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