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

doi:10.1088/1674-1056/23/5/050311

中国物理B ›› 2014, Vol. 23 ›› Issue (5): 50311-050311.doi: 10.1088/1674-1056/23/5/050311

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

王艮芳, 吕建美, 王林成

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China

收稿日期:2013-08-11 修回日期:2013-10-16 出版日期:2014-05-15 发布日期:2014-05-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10905007 and 61078011) and the Fundamental Research Funds for the Central Universities, China (Grant No. DUT12LK28).

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

Wang Gen-Fang (王艮芳), Lü Jian-Mei (吕建美), Wang Lin-Cheng (王林成)

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China

Received:2013-08-11 Revised:2013-10-16 Online:2014-05-15 Published:2014-05-15
Contact: Wang Lin-Cheng E-mail:wanglc@dlut.edu.cn
About author:03.67.Mn; 03.65.Yz; 05.60.Gg
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10905007 and 61078011) and the Fundamental Research Funds for the Central Universities, China (Grant No. DUT12LK28).

摘要/Abstract

摘要： 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.

关键词: entanglement, spin-star environment, weakly coupled system

Abstract: 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.

Key words: entanglement, spin-star environment, weakly coupled system

中图分类号: (Entanglement measures, witnesses, and other characterizations)

03.67.Mn

03.65.Yz (Decoherence; open systems; quantum statistical methods) 05.60.Gg (Quantum transport)

王艮芳, 吕建美, 王林成. Spin-star environment assisted entanglement generation in weakly coupled bipartite systems[J]. 中国物理B, 2014, 23(5): 50311-050311.

Wang Gen-Fang (王艮芳), Lü Jian-Mei (吕建美), Wang Lin-Cheng (王林成). Spin-star environment assisted entanglement generation in weakly coupled bipartite systems[J]. Chin. Phys. B, 2014, 23(5): 50311-050311.

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

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

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