对单原子的局域操作实现原子纠缠态的纯化  

Entanglement distillation for atomic states by local operation

作　　者：熊狂炜[1] 刘志敏[1] 

机构地区：[1]华东交通大学应用物理系,江西南昌330013

出　　处：《高师理科学刊》2010年第2期63-65,共3页Journal of Science of Teachers＇College and University

基　　金：江西省自然科学基金项目(2008GQW0017);华东交通大学校立科研基金项目(09JC03)

摘　　要：提出了一个利用原子与腔场相互作用实现原子纠缠纯化的方案,并将该方法推广到多原子部分纠缠的情况.计算结果表明,对不同原子数的部分纠缠态,纯化的概率都为2b2.该方案的主要优点是只需引入一个辅助腔场,然后进行局域操作就能实现原子的纠缠纯化,这在实验上是简单可行的.A physical scheme for atomic entangled states distillation is proposed via atom-cavity field interaction. Which is generalized to non-maximaUy entangled muhi-atom states distillation. It is found from calculation outcome that the distillation probabilities of all kinds of entangled atomic states are the same, 2│b│^2. The advantage of the scheme is entangled distillation is realized through only introducing an auxiliary cavity and making a local operation. The scheme is simple and feasible in experiment.

关 键 词：纠缠纯化 原子纠缠态 腔QED 

分 类 号：O431.2[机械工程—光学工程]