一种低经典通信消耗的量子远程态制备方案  

A scheme for remote state preparation with low classical communication cost

作　　者：陶原[1] 潘炜[1] 罗斌[1] 

机构地区：[1]西南交通大学信息科学与技术学院,成都610031

出　　处：《物理学报》2008年第4期2016-2020,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10174057;90201011);教育部科学技术研究重点项目(批准号:105148);高等学校博士学科点专项科研基金(批准号:20030613007)资助的课题~~

摘　　要：设计了一组新的量子远程态制备步骤,在发送方对手中的粒子完成测量后,接收方采用该步骤可以有效降低远程态制备的经典通信消耗.给出一种利用部分纠缠的三粒子Greenberger-Horne-Zeilinger(GHZ)态和部分纠缠的二粒子态作信道,远程制备一个三粒子GHZ态的方案,以此方案为例具体说明上述方法的运用步骤并给出了该方法的适用范围.结果表明,运用该方法后只需消耗1bit经典信息即可远程制备一个三粒子GHZ态.We propose a new remote state preparation process. After the sender measures her particles, adopting the new process, the receiver can greatly reduce the classical communication cost. With a partial entangled three-particle Greenberger-Horne-Zeilinger （GHZ） state and a partial entangled two-particle state as the quantum channel, we present a scheme for preparing remotely a three-particle GHZ state. Taking this scheme as an example, we show how to use this process in detail and present the application range of this process. Analysis shows： only one classical bit is required for remote preparation of the three-particle GHZ state by using this process.

关 键 词：远程态制备 经典通信消耗 三粒子Greenberger-Home-Zeilinger态 量子信道 

分 类 号：O413[理学—理论物理]