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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2014-05-01

发表刊物：CHINESE PHYSICS B

收录刊物：Scopus、ISTIC、EI、SCIE

卷号：23

期号：5

ISSN号：1674-1056

关键字：entanglement; spin-star environment; weakly coupled system

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.