三粒子任意态的量子隐形完全传送(英文)  

Perfect Teleportation an Arbitrary Three-particle State

作　　者：查新未[1] 张炜[1] 

机构地区：[1]西安邮电学院应用数学与应用物理系,西安710121

出　　处：《光子学报》2009年第4期979-982,共4页Acta Photonica Sinica

基　　金：Supported by the Natural Science Foundation of Shaanxi Province(2004A15);by the Special Science Foundation of Education Bureau of Shaanxi Province(05JK288)

摘　　要：提出一个利用六粒子非贝尔对量子通道对一个任意的三粒子量子态进行隐形传送的方案.发送者Alice对需传送的三粒子量子态与属于自己的纠缠对中的三粒子进行三次Bell基测量,并将测量结果通过经典通道告诉接受者,接受者Bob根据这些信息对自己拥有的粒子进行Toffoli变换,就可使这三粒子处于待发送的原始量子态,从而实现概率为1的量子态隐形传送.利用变换算符的思想,很容易得出塌陷态的表达式以及接受者Bob所做的幺正变换的表达式.A scheme of teleportation of an arbitrary three-qubit state is presented by using the generalized Bell-basis measurement and the Non-Bell-Pair quantum channel . Teleportation can be perfectly realized if Alice makes Bell-state measurement on her particles and Bob carries out appropriate unitary transformation （Toffoli transformation ）on his particle. The unknown three- particle entangled state can be teleported perfectly, and the successful possibilities and fidelities of the two schemes both reach unity. Based on the transformation operator, the collapses states can easily obtained and Bob＇s unitary transformation can also easily given.

关 键 词：量子隐形传送 变换算符 六粒子纠缠通道 

分 类 号：O431.2[机械工程—光学工程] O413.1[理学—光学]