基于五粒子Cluster态的受控双向量子隐形传态  

Controlled two-way quantum teleportation based on five particle cluster state

作　　者：郑晓毅[1] 

机构地区：[1]广东水利电力职业技术学院自动化工程系,广东广州510635

出　　处：《量子电子学报》2016年第2期177-181,共5页Chinese Journal of Quantum Electronics

摘　　要：提出了一个由三方共享五粒子Cluster态为量子通道进行单粒子双向隐形传送的方案。方案中通信双方Alice和Bob各拥有五粒子Cluster态中的2个粒子以及未知单粒子态的粒子A和B,控制者Cindy拥有Cluster态中1个粒子。Alice和Bob首先分别对手中的粒子A,B以及通道中的1个粒子做Bell基测量。并通过经典信道将测量结果告知对方以及控制者Cindy。接着,Cindy对手中的粒子做单粒子投影测量,并通过经典信道告知Alice和Bob测量结果。Alice和Bob根据三方的测量结果分别对手中的另一个粒子做出相应的幺正操作得到对方所要传送的量子态,使单粒子态的受控双向隐形传态的目的得以实现。A scheme was proposed that the five particle cluster state shared by three parties functions as the quantum channel for the two-way teleportation of a single particle,in which the two communicating parties Alice and Bob each have two particles of the five particle cluster state and the particles A and B of the unknown single particle state,and the controller Cindy has one particle of the five particle cluster state.To start with,Alice and Bob have to perform respectively Bell-state measurements of the particle A and B in their hands and the one particle in the channel,informing each other plus the controller Cindy of the measurement through the classical channel.Then,Cindy has to conduct single-particle projective measurement of one particle that she has,notifying the measurement results of Alice and Bob in the same way.Based on the measurement of the three parties Alice and Bob have to make their own appropriate unitary operations of another particle so that they can get the quantum state that they are sending to each other,helping to achieve the aim of the controlled two-way teleportation of single particle state.

关 键 词：量子信息 受控双向隐形传态 五粒子Cluster态 BELL基测量 幺正操作 

分 类 号：O413[理学—理论物理]