利用三粒子部分纠缠GHZ态概率隐形传送三粒子GHZ态  

Probabilistic Teleportation of a Three-particle GHZ State Via a Partial Threeparticle GHZ State

作　　者：林秀[1] 李洪才[1] 杨榕灿[1] 

机构地区：[1]福建师范大学物理与光电信息科技学院,福建福州350007

出　　处：《福建师范大学学报（自然科学版）》2007年第1期37-41,共5页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(10574022);福建省自然科学基金资助项目(Z0512006)

摘　　要：提出利用一个三粒子部分纠缠GHZ态作为量子信道,实现三粒子GHZ态从发送者传送给两个接收者中任意一个的概率隐形传态方案.若发送者进行一次B e ll测量和两次H adam ard门操作后,想得到所需传送的三粒子GHZ态的接收者端引进两个辅助粒子,进行两次控制-非操作,同时根据另一个接收者对手中粒子进行H adam ard门操作后的测量结果实施一个适当的幺正变换,可以一定的概率成功地隐形传送三粒子GHZ态.此方案可推广至隐形传送k粒子GHZ态,这时也只要用一个三粒子GHZ态作为量子信道,但想得到所需传送的k粒子GHZ态的接收者端需引进(k-1)个辅助粒子,进行(k-1)次控制-非操作.A scheme for teleporting an unknown three-particle GHZ state from a sender to either one of two receivers through a non-maximally three-particle entangled GHZ state as quantum channel is proposed. An unknown three-particle entangled state can be perfectly teleported probabilistically if the sender performs a generalized Bell-state measurement and the Hadamard operations while either one of two receivers introduces two additional particles, performs the controlled-not （C-not） operations and introduces an appropriate unitary transformation with the help of the other receiver＇s the Hadamard operation and simple measurement. The present scheme may be directly generalized to teleport an unknown k-particle GHZ state from a sender to either one of two receivers by using a partial entangled three-particle GHZ state as the quantum channel, in- troducing （k - 1） additional qubits and performing （k - 1） C-not operations.

关 键 词：量子光学 概率隐形传态 三粒子GHZ态 幺正变换 控制-非操作 

分 类 号：O431.2[机械工程—光学工程]