V-型三能级原子与双模腔场模型中的纠缠交换方案  

The scheme of entanglement swapping in V-type three-level atoms and two-mode cavity-field

作　　者：张蕾[1] 杨洁[1] ZHANG Lei;YANG Jie(Huaqing College,Xi’an University of Architecture and Technology,Xi’an 710043,China)

机构地区：[1]西安建筑科技大学华清学院,西安710043

出　　处：《原子与分子物理学报》2020年第4期587-590,共4页Journal of Atomic and Molecular Physics

基　　金：陕西省教育厅专项科研项目(18JK025)。

摘　　要：文章利用V-型三能级原子与双模腔场双光子共振相互作用,提出了一种纠缠交换的方案制备最大纠缠态,此方案不需要Bell基测量,只需对单个原子进行测量,就能实现初始没有直接相互作用的原子与腔场之间产生纠缠,合适选择原子与腔场之间的相互作用时间可获得具有最大保真度以及成功几率的最大纠缠态,另外,还讨论了该方案的实验可行性.A scheme for generation of maximally entangled atom-photon state by means of entanglement swapping, based on the resonant interaction of two V-type three-level atoms with two two-mode cavities via the two-photon process is proposed. In the scheme, the joint measurement is not needed, only single measurement on atom is needed in realizing the swapping process. The entanglement between atom and cavity field without the initial direct interaction can be realized. Entanglement swapping with 99.8% fidelity for maximally entangled states can be obtained by conveniently choosing the atom-field interaction time. The success probability and the feasibility of the scheme are also considered.

关 键 词：量子纠缠 双模真空腔场 纠缠交换 保真度 

分 类 号：O56[理学—原子与分子物理]