两纠缠原子之一与腔场相互作用过程的纠缠研究  

The Study on Entanglement in the Resonant Interaction Between one of the two Entangled Two-level Atoms and Cavity Field

作　　者：栗军[1] 夏云杰[1] 

机构地区：[1]曲阜师范大学物理工程学院,山东曲阜273165

出　　处：《量子光学学报》2006年第4期218-221,共4页Journal of Quantum Optics

摘　　要：使一对纠缠的二能级原子之一与单模真空腔场发生共振相互作用,通过选择不同的演化时间,对这个三体系统的其中之一做选择性测量,可调节另外两体的纠缠状态。在不做测量时,研究了在不同的初始状态下,三体纠缠及三体中两两纠缠的演化特性。结果表明,该体系纠缠都呈现周期性的振荡,特别是,通过选择合适的初始状态和演化时间可生成强壮纠缠态———W纠缠态;在特定演化时刻,可使两纠缠原子的纠缠信息完全转化到腔外原子和腔场中去。When one of the two entangled two-level atoms interacts with a single-mode vacuum cavity resonantly, an arbitrary state measuremeut is made on one part of the system to control the entanglement state of the other two parts through choosing evolution times. The paper investigates the evolution characteristics of the three-body entanglement and the entanglement between two parts of the system at different initial state when measurements are not made. The results show that all entanglement in this system oscillates periodically, w-entangled state can be gotten via choosing appropriate initial state and interaction time, and the initial entanglement information between two atoms can be completely transferred to the atom outside of the cavity and the cavity field at a particular evolution moment.

关 键 词：纠缠量 J-C模型 三体纠缠 纠缠转换 

分 类 号：O431[机械工程—光学工程]