纠缠相干态的制备(英文)  

Entangled coherent states:generation

作　　者：何带果[1] 董裕力[1] 方建兴[1] 钱丽[1] 胡洁[1] 

机构地区：[1]苏州大学物理科学与技术学院,江苏苏州215006

出　　处：《量子电子学报》2011年第4期407-413,共7页Chinese Journal of Quantum Electronics

基　　金：The National Natural Science Foundation of China(10774108,11074184)

摘　　要：提出了一个利用单一的二能级原子和处于相干态的腔模来制备Bell型和簇型纠缠相干态的方案。并对这两种纠缠相干态进行了讨论。让一个单一的二能级原子和两个Ramsey zones以及两个处于相干态的腔模相互作用,并通过原子测量,就可以在分离的腔中实现Bell型纠缠相干态的制备。通过增加Ramsey zones和腔模就可以制备簇型纠缠相干态。原子和每个腔模的相互作用时间均为π/2λ,其中λ是原子和腔的有效耦合常数。最后讨论了方案实验上的可行性。A scheme of generating the Bell-type and cluster-type entangled coherent states（ECSs） via a single two-level atom and cavity modes initially prepared in coherent states is proposed.Discussions on the two ECSs are presented.When the atom interacts separately with two Ramsey zones and two cavity modes,the generation of Bell-type ECSs in separate cavities is realized after an atomic measurement.By adding the Ramsey zones and cavity modes,the cluster-type ECSs can be generated.The interaction time between the atom and cavity modes are allπ/2λ,where A is the effective atom-cavity coupling constant. At last the experimental feasibility of such proposal is discussed.

关 键 词：量子光学 量子纠缠 相干态 腔QED 

分 类 号：O431.2[机械工程—光学工程]