量子远程制备的理论研究进展  

Theoretical Quantum Remote Preparations

作　　者：罗明星[1] 

机构地区：[1]西南交通大学信息科学与技术学院,四川成都610031

出　　处：《四川师范大学学报（自然科学版）》2015年第2期300-312,156,共13页Journal of Sichuan Normal University（Natural Science）

基　　金：国家自然科学基金青年基金(61303039);中央高校创新基金(2682014CX095)资助项目

摘　　要：量子通信作为量子信息处理中的重要组成部分得到了广泛研究.它与传统通信方式不同,量子信息可以不通过量子媒介就能异地传输,量子隐形传态就是典型事例.作为一种改进的量子传输协议,量子远程制备能够平衡量子测量和经典通信,但是研究证明,这种平衡并不适合所有量子态,它受到很严格的限制,依赖于所传输信息空间的代数或几何结构.随着研究不断深入,这种限制似乎可以通过信息分裂传输来部分克服.主要总结了量子远程制备的理论研究现状及典型案例,并对进一步需要开展的研究予以展望.Quantum communication as an important part of quantum information processing has been widely investigated. Different from classical communication,quantum information may be transferred without physical transportation of quantum media. Quantum teleportation is the first typical example. As an improved quantum transport protocol,quantum remote preparation may be used to balance the quantum measurement and classical communication complexity. However,studies have shown that this balance is unsuitable for all quantum states. It greatly depends on the spactial algebraic or geometric structure of space in which the information may be transmitted. Recently,it seems that the restriction can be partially overcome by using information splitting. This paper aims to summarize theoretical remote preparations and presents primitive examples. It is desired that with this article,researchers without fundamental knowledges may be familiar with these schemes. Meanwhile,it provides some suggestions for further research.

关 键 词：量子态 量子纠缠 量子远程制备 量子联合制备 量子分裂 

分 类 号：O59[理学—应用物理]