Factors influencing entanglement of two excitons in a coupled exciton-photon system

• 来源期刊: 中国物理B（英文版）
• 关键词: quantum dot exciton linear entropy antibunching effect
• 年，卷（期）: 2008,（2）
• 页码范围: 435-439
• 页数: 5页
• 语种: 英文

摘要

The relation between the excitonic purity and the concurrence in a system of two coupled large semiconduction quantum dots mediated by a single-mode cavity field is investigated by using linear entropy theory.The results show the difference in describing two modes of excitonic entanglement between linear entropy and concurrence.The relation between nonclassical property of cavity field and the entanglement degree of exeitous is also discussed.The results show that two modes of exciton can reach maximal entanglement when the cavity exhibits an antibunching effect.