Entanglement dynamics and transfer in a double Jaynes-Cummings model  

作　　者：HAN Feng 

机构地区：[1]Department of Physics, Jining University, Jining 273155, China

出　　处：《Chinese Science Bulletin》2010年第17期1758-1762,共5页

基　　金：supported by the National Natural Science Foundation of China (10774088).

摘　　要：We study the entanglement dynamics for a double Jaynes-Cummings model where two entangled atoms A and B locally interact with independent cavities a and b, respectively, but there are no interactions between locations Aa and Bb. We point out that there exists a parameter range in which simultaneous pairwise entanglement sudden death (ESD) for remote parties, i.e. AB, ab, Ab and Ba, may occur. We show that during this simultaneous ESD period various multipartite entanglement can be created. Our results imply that the pairwise entanglement between two independent locations may be transferred into other multipartite forms which account for the correlations between the two independent locations.We study the entanglement dynamics for a double Jaynes-Cumrnings model where two entangled atoms A and B locally interact with independent cavities a and b, respectively, but there are no interactions between locations Aa and Bb. We point out that there exists a parameter range in which simultaneous pairwise entanglement sudden death （ESD） for remote parties, i.e. AB, ab, Ab and Ba, may occur. We show that during this simultaneous ESD period various multipartite entanglement can be created. Our results imply that the pairwise entanglement between two independent locations may be transferred into other multipartite forms which account for the correlations between the two independent locations.

关 键 词：纠缠原子 双光子 动力学 S模型 转让 相互作用 参数范围 突然死亡 

分 类 号：O431.2[机械工程—光学工程] O431[理学—光学]