纠缠Ⅴ-型三能级原子与纠缠双模腔场相互作用的纠缠特性  

Entanglement properties of entangled V-type three-level atoms interacting with entangled two-mode cavity fields

作　　者：张蕾[1] 强稳朝[2] 郝丹辉[1] ZHANG Lei;QIANG Wenchao;HAO Danhui(Huaqing College,Xi’an University of Architecture and Technology,Xi’an 710043,China;Faculty of Science,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学华清学院,陕西西安710043 [2]西安建筑科技大学理学院,陕西西安710055

出　　处：《量子电子学报》2020年第3期356-362,共7页Chinese Journal of Quantum Electronics

基　　金：陕西省教育厅科研项目(18JK025)。

摘　　要：针对由一对处于纠缠态的V-型三能级原子与一对处于纠缠态的双模腔场组成的系统,使其中一个原子在合适的时间内与一个腔场发生大失谐相互作用,即纠缠交换,从而实现原子与腔场之间的纠缠。研究了该系统原子熵的演化特性,并运用量子熵理论讨论了失谐量(δ)大小对原子熵演化的影响。结果表明δ的大小对系统熵的最大纠缠度和系统熵的崩塌-回复现象有影响,当δ为0时崩塌-回复现象消失。For a syetem composed of a pair of V-type three-level atoms in entangled state and a pair of two-mode cavity fields in entangled state,a large detuning interaction between one atom with a cavity field is made to happen during a proper interaction time,so as to realize the entanglement between the atom and the cavity field.The atomic entropy evolution properties of the system are studied,and the influences of the detuning δ on the evolution of atom entropy are discussed by using the quantum entropy theory.The results indicate that δ affects the maximum entanglement value of the entropy and the collapse-recovery phenomenon of atom entropy,and when δ is zero,collapse-recovery phenomenon of atom entropy almost disappears.

关 键 词：量子光学 量子纠缠 纠缠交换 双模腔场 熵 

分 类 号：O431.2[机械工程—光学工程]