经典驱动J-C模型中的纠缠演化和转移特性研究  

Entanglement evolution and transfer in classical driven Jaynes-Cummings model

作　　者：封玲娟[1] 张英杰[1] 夏云杰[1] 

机构地区：[1]曲阜师范大学物理工程学院,山东省激光偏光与信息技术重点实验室,山东曲阜273165

出　　处：《量子电子学报》2013年第6期716-721,共6页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(61178012;11247240);山东省自然科学基金(ZR2012FQ024);教育部博士点专项科研基金(20123705120002)

摘　　要：研究了受经典场驱动的两个二能级原子分别与两个单模腔场相互作用模型中两原子的纠缠动力学行为。该工作主要是对经典场驱动存在的J-C模型进行研究,采用数值计算的方法,详细分析了纠缠初始状态以及经典场的驱动强度对原子纠缠和转移特性的影响。结果表明,适当调节经典场驱动强度,可以使原子的纠缠突然死亡现象得到抑制,同时实现原子与腔场间的最大转移。The entanglement dynamical behaviors of two two-level atoms, which respectively interacted with two single-mode cavity field were investigated. The Jaynes-Cummings model in which the classical driven strength exists was studied. By means of numerical calculation, effect of the initial entanglement and classical field driven strength on the entanglement evolution and transfer of two atoms was analyzed. The result shows that when the appropriate condition is chosen, the phenomenon of entanglement sudden death can be inhibited, and the biggest entanglement transfer between the atoms and cavity fields can be realized.

关 键 词：量子光学 量子纠缠 部分转置矩阵负本征值 经典场驱动 

分 类 号：O431.2[机械工程—光学工程]