Nonlinear Interaction and Entanglement Transfer from SU(1,1) Coherent State to Mixed Atoms  

作　　者：ZHANG Jin-Hua LIANG Mai-Lin YUAN Bing ZHANG Fu-Lin 

机构地区：[1]Physics Department, School of Science, Tianjin University, Tianjin 300072, China

出　　处：《Communications in Theoretical Physics》2008年第1期83-87,共5页理论物理通讯（英文版）

基　　金：The project supported by National Natural Science Foundation of China under Grant No.20376054

摘　　要：For nonlinear interactions with different forms of intensity-dependent coupling, entanglement transfer from the correlated two-mode SU（1,1） coherent states （SCS） to the initially separable and mixed atoms is investigated. It is found that suitable intensity-dependent coupling can enhance the entanglement transfer and make the atomic entanglement evolve periodically especially for the initially mixed atomic states. For SCS, the entanglement between the two modes is strengthened with the increase of the photon number difference （PND） between the two modes of the fields. When PND is odd, the entanglement between the atoms is less than that when PND is even.

关 键 词：entanglement transfer intensity-dependent coupling SU（1 1） coherent state mixed atomic states 

分 类 号：O413[理学—理论物理] O411[理学—物理]