利用三粒子纠缠态建立量子隐形传态网络的探讨  

Discussion on building the net of quantum teleportation using three-particle entangled states

作　　者：周小清[1] 邬云文[1] 

机构地区：[1]吉首大学物理科学与信息工程学院,吉首416000

出　　处：《物理学报》2007年第4期1881-1887,共7页Acta Physica Sinica

基　　金：湖南省自然科学基金(批准号:03JJY6015);湖南省教育厅自然科学基金(批准号:06C653)资助的课题.~~

摘　　要：利用W态纠缠源可以产生三纠缠粒子,用这些相互纠缠的粒子作为量子信道,再辅以经典信道传送Bell基联合测量信息和von Neumann测量信息,便可实现量子隐形传态网络.基于上述思想,研究了三纠缠粒子量子隐形传态网络的物理基础,得到了基于三粒子W态下隐形传态的幺正变换矩阵,设计了一个基于三纠缠粒子的量子隐形传态网络,给出了一个基于该网络的通信方案.网络中的各站点按所述方法便可实现任意站点间的量子通信.We may make three-particle entanglement using the source of three-particle W states. Put this particle entanglement down as quantum channel, and transfer information of Bell states measurement and yon Neumann measurement using classical channel, the quantum teleportation net may then be realized. Based on this idea, we investigate the physical principle for building the quantum teleportation net using three-particle W states, find out the unitary transformation matrix for quantum teleportation of three-particle W states, and design a quantum teleportation net. We propose a scheme for quantum communications net and its protocol. If all stations work as schemed, quantum communications between any two stations may be realized.

关 键 词：量子通信 量子隐形传态 W态 

分 类 号：O413[理学—理论物理]