一种全概率联合远程制备四粒子cluster类态的方案  

Scheme for joint remote preparation of four-qubit cluster-type states with unit success probability

作　　者：陈正飞[1,2] 陈云峰[2,3] 刘文杰[1,2] 

机构地区：[1]南京信息工程大学江苏省网络监控中心,南京210044 [2]南京信息工程大学计算机与软件学院,南京210044 [3]中国气象局气象宣传与科普中心,北京100081

出　　处：《计算机应用研究》2015年第9期2794-2797,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(61103235;61373131);江苏高校优势学科建设工程资助项目

摘　　要：为了解决四粒子cluster类态的联合远程制备问题,提出了一种新的制备方法。采用两个GreenbergerHorne-Zeilinger(GHZ)态作为量子信道,每个制备者只需依次执行2×2维Hilbert空间二粒子投影测量。在接收端,接收者将对手中两个粒子进行某种酉操作,并分别对两个辅助粒子进行受控非门操作,从而最终获取需制备的cluster类态。经分析,该协议可实现全概率制备,即Psuc=1,并且效率比同类协议更高,因而更加经济、实用。For joint remote preparation of four-particle cluster-type states, this paper proposed a new solution. In this solu- tion, it used two GHZ states as quantum channels, and just required each senders to perform orderly a bipartite projective measurement in 2 ×2-dimensional Hilbert space. At the receiving end, the receiver needed to adopt some appropriate unitary operation to his/her own two particles, and then respectively applied a controlled-NOT gates to the two auxiliary particles. As a result, he/she could obtain the original state. Analysis shows this protocol can really achieve the unit success probability, i. e. , Psuc = 1, and the efficiency is higher than other relevant protocols. Therefore, it is more economical and practical.

关 键 词：cluster类态 联合远程制备 GHZ态 投影测量 全概率 

分 类 号：TN918[电子电信—通信与信息系统]