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论文类型：期刊论文

发表时间：2011-08-01

发表刊物：INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS

收录刊物：SCIE

卷号：50

期号：8

页面范围：2552-2559

ISSN号：0020-7748

关键字：Insulator state; Superfluid state; Ground-state entanglement; Coupled cavity

摘要：We study two coupled cavities, each of which contains two two-level atoms. We identify the regions of Mott-insulator and superfluid states. Ground-state entanglement of two atoms in one cavity has been investigated. The result show that quantum entanglement of two atoms within one cavity can also characterize quantum phase transition.