J4 ›› 2012, Vol. 29 ›› Issue (5): 566-571.

• 量子光学 • 上一篇    下一篇

用Cluster态实现任意两粒子态的远程态制备方案

张彩云1, 安振杰2, 杨丽洁2,潘桂侠3   

  1. 1 安徽理工大学理学院,安徽 淮南 232001 2;
    2 核工业理化工程研究院,天津 300180; 
    3 安徽矿业职业技术学院机械工程系,安徽 淮北 235000
  • 收稿日期:2011-08-15 修回日期:2012-08-25 出版日期:2012-09-28 发布日期:2012-09-02
  • 通讯作者: 张彩云(1980-),女,安徽肥东人,理学硕士,讲师,主要研究方向为量子信息。 E-mail:zcylh9@163.com
  • 基金资助:

    安徽省高等学校优秀青年人才基金项目 (2009QRZ056), 安徽理工大学青年教师研究基金项目(2012QNZ13), 安徽省安徽理工大学硕博基金(200911176)

Remote preparation of two-qubit state using four-qubit cluster state

Zhang Cai-yun1,An Zhen-jie2,Yang Li-jie2,Pan Gui-xia3   

  1. 1 School of Science, Anhui University of Science and Technology, Huainan 232001, China; 
    2 Research Institute of Physical and Chemical Engineering of Nuclear Industry , Tianjin  300180, China; 
    3 Department of Mechanical Engineering, Anhui College of Mining and Technology , Huaibei  235000, China
  • Received:2011-08-15 Revised:2012-08-25 Published:2012-09-28 Online:2012-09-02

摘要:

提出一个用Cluster态作为量子信道远态制备两量子态的方案,并计算了此方案成功的概率和消耗的经典信息。一般地,Bob能成功地制备初态的概率是1/4和消耗的经典信息是1/4经典比特。然而,在六种特殊情形下,消耗一些多余经典信息后,成功的概率能达到1/2甚至1。

关键词: 远态制备, 四量子比特Cluster态, 两量子比特投影测量, 经典通讯, 幺正操作

Abstract:

A scheme is proposed for remotely preparing a two-qubit state by using four-qubit cluster state as the quantum channel. In the scheme, the success probability of preparation and classical communication cost are calculated. In general, Bob can successfully prepare the target state with the probability 1/4 and consume only 1/4 bits classical communication. However, if the state belongs to six special situations, the success probability of preparation can reach 1/2 or even 1 after consuming some extra bits.

Key words: remote state preparation, four-qubit cluster state, two-qubit projective measurement, classical communication, unitary operation

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