Spin-star environment assisted entanglement generation in weakly coupled bipartite systems

We study the entanglement evolution in a weakly coupled bipartite system with a large energy level difference under the influence of spin-star environments. The subsystems can be coupled to a pure state or a thermal equilibrium state spin-star environment. Our results show that, in the case of the c...

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Bibliographic Details
Published inChinese physics B Vol. 23; no. 5; pp. 107 - 112
Main Author 王艮芳 吕建美 王林成
Format Journal Article
LanguageEnglish
Published 01.05.2014
Subjects
Energy levels
Entanglement
Evolution
Joining
Strength
分体系
平衡状态
弱耦合
星级
环境
纠缠
耦合强度
耦合系统
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Summary:We study the entanglement evolution in a weakly coupled bipartite system with a large energy level difference under the influence of spin-star environments. The subsystems can be coupled to a pure state or a thermal equilibrium state spin-star environment. Our results show that, in the case of the coupling strength being less than the energy level difference of the subsystems （weakly coupled）, the spin-star environment can always be used to assist the entanglement generation of the bipartite system.
Bibliography:entanglement, spin-star environment, weakly coupled system
We study the entanglement evolution in a weakly coupled bipartite system with a large energy level difference under the influence of spin-star environments. The subsystems can be coupled to a pure state or a thermal equilibrium state spin-star environment. Our results show that, in the case of the coupling strength being less than the energy level difference of the subsystems （weakly coupled）, the spin-star environment can always be used to assist the entanglement generation of the bipartite system.
Wang Gen-Fang, Lü Jian-Mei, Wang Lin-Cheng（ School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China）
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/5/050311