双模压缩库场驱动下两个二能级原子的纠缠性质  

Entanglement Between a Pair of Two-level Atoms Drived by Two-mode Squeezed Field

作　　者：黄晖[1] 周本元[1] 

机构地区：[1]华中师范大学物理科学与技术学院,武汉430079

出　　处：《江汉大学学报（自然科学版）》2008年第4期20-24,共5页Journal of Jianghan University：Natural Science Edition

摘　　要：研究了分别含有一个原子的两个非局域的压缩库间初始通过纠缠光关联起来的体系的纠缠演化性质,讨论了该性质与原子初态等因素的关系和规律.结果表明:两个分离的一般压缩库间,两个原子间的纠缠度会随时间的演化出现纠缠死亡和恢复的现象.纠缠随时间的演化最终都会趋于一个稳定的值,而且是同一个值,同样与原子初态无关.Investigates the property of entanglement between a pair of two-level atoms placed in two apart squeezed reservoirs correlated by two-mode squeezed light. Studies the relation of the property to the qubits initial state. The result shows that the sudden death and revival of entanglement of the qubits always occurs between the apart squeezed reservoirs with the time evolution. Nevertheless, each the entanglements of various initial state eventually maintains at a same stationry level, has no relationship with the initial state of atom.

关 键 词：压缩库 纠缠突然死亡 纠缠恢复 

分 类 号：O431.2[机械工程—光学工程]