N粒子W纠缠态的隐形传输  

Teleportation of N-particle in Entangled W State

作　　者：沙金巧[1] 方建兴[1] 姜炜星[1] 杨俊义[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：《量子光学学报》2007年第2期114-117,共4页Journal of Quantum Optics

基　　金：江苏省教育厅自然科学基金(Q1108404)

摘　　要：提出使用纠缠交换的方法,采用N对二粒子非最大纠缠态作为量子通道来传输N粒子W纠缠态的方案。传输过程中,发送者对自己所拥有的粒子进行Bell基测量,并将测量结果通过经典通道通知接收者,接收者根据所获取的信息对她的粒子实行相应的幺正变换以恢复最初待传输的粒子态,从而,成功实现该隐形传输。文章还以三粒子的传输为例作了详细介绍。In this scheme, N pairs of non-maximally entangled particle are used as quantum channel to teleport an unknown N-particle entangled W state via entanglement swapping, which has more generality. In order to realize this teleportation, the sender Alice performs Bell-measurements on particles belonging to her. Then the sender sends the results to the receiver Bob through the classical channel. According to the resuhs, Bob performs a corresponding unitary on particles to reconstruct the original state. And then, teleporting an unknown three-particle entangled W state is presented.

关 键 词：纠缠态 纠缠交换 幺正变换 塌缩态 隐形传输 

分 类 号：O431[机械工程—光学工程]