在第三方控制下实现量子隐形传输

J4 ›› 2014, Vol. 31 ›› Issue (2): 186-193.

在第三方控制下实现量子隐形传输

符钰棋，陈杭，方建兴

苏州大学物理科学与技术学院，江苏苏州 215006

收稿日期:2013-09-13 修回日期:2013-12-18 出版日期:2014-03-28 发布日期:2014-03-20
通讯作者: 方建兴（1963-），教授，博士生导师，研究方向为量子光学. E-mail:fangjx@suda.edu.cn
作者简介:符钰棋（1988-）研究生，研究方向为量子光学. E-mail: yuqifusuda@163.com
基金资助:
National Natural Science Foundation of China(11074184)

Realization of quantum teleportation under the control of a third party

FU Yu-qi,CHEN Hang,FANG Jian-xing

School of Physics and Technology,Soochow University,Suzhou 215006,China

Received:2013-09-13 Revised:2013-12-18 Published:2014-03-28 Online:2014-03-20

摘要/Abstract

摘要： 提出了一种利用两粒子最大纠缠态和三粒子部分纠缠态作为量子通道，成功实现量子隐形传态的方案，其中作为通道的三粒子部分纠缠态可以由一般的GHZ态经过一个H门和CNOT门得到，并且与以往一般的三粒子通道相比，它可以传输更多的信息给接收者。发送者Alice在以Bell基为底的基础上对手中的粒子进行测量，然后把测量结果通过经典信道告诉控制者Charlie，Charlie以非最大纠缠Bell基为底，对粒子进行测量，把结果告诉接收者Bob，最后Bob对粒子进行相应的幺正变换，即可得到最初态。此方案采用非最大纠缠态作为量子通道，在Charlie的控制下，有可能实现传输概率100%的完美传输。

关键词: 量子信息, 量子隐形传态, 一般GHZ态, 非最大纠缠态, 幺正变换

Abstract: A scheme of quantum teleportation is proposed, with a set of two-qubit maximally entangled states and three-qubit partially entangled states as a shared quantum channel, the three-qubit partially entangled states where as the channel can be physically realized from the generalized Greenberger-Horne-Zeilinger (GHZ) states by performing a H(Hadamard) gate and a CNOT gate on it, more importantly, compared to the channels of the general three-particle states, our states allow the transfer of a maximum number of bits from the sender to the receiver. The sender Alice measures his qubits in the Bell basis, then tells the measurement results to controller Charlie from the a classical channel, now Charlie measures his qubits in the partially entangled Bell basis, and tells Bob of the results, at last in order to recover the teleported states successfully, Bob needs to perform a corresponding unitary transformation. In addition, this program uses a non-maximally entangled states as a shared channel, under the control of Charlie, the probability of the successful quantum teleportation may reach 100%.

Key words: quantum information, quantum teleportation, generalized GHZ states, non-maximally entangled states, unitary transformation

中图分类号:

O431.2

符钰棋，陈杭，方建兴. 在第三方控制下实现量子隐形传输[J]. J4, 2014, 31(2): 186-193.

FU Yu-qi,CHEN Hang,FANG Jian-xing. Realization of quantum teleportation under the control of a third party[J]. J4, 2014, 31(2): 186-193.

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