Entanglement evolution and transfer in a double Tavis-Cumming model in cavity QED

• 来源期刊: 中国物理B（英文版）
• 关键词: entanglement evolution entanglement transfer Tavis-Cumming model
• 年，卷（期）: 2009,（10）
• 页码范围: 4117-4121
• 页数: 5页
• 语种: 英文

摘要

We have studied entanglement evolution and transfer in a double Tavis-Cumming model where two pairs of entangled two-level atoms AB and CD interact with two single-mode cavity fields a and b. We show that the Bell-like initial state of atoms AB can exhibit entanglement sudden death which should be independent of the initial entanglement of atoms CD. Also, we show that the initial entanglement of one atomic pair can he transferred into another pair, as well as the possible subsystems, that become entangled during evolution.