基于四粒子GHZ纠缠态实现双向隐形传态

J4 ›› 2014, Vol. 31 ›› Issue (3): 285-290.

基于四粒子GHZ纠缠态实现双向隐形传态

胡钰安，叶志清

江西师范大学物理与通信电子学院，江西省光电子与通信重点实验室,南昌 330022

出版日期:2014-05-28 发布日期:2014-05-27
通讯作者: 叶志清（1960—）浙江建德人，教授，主要研究方向为光量子通信. E-mail:yezhiqing2008@163.com
作者简介:胡钰安（1990—）江西南昌人，研究生，主要研究方向为光量子通信. Email: 772315061@qq.com
基金资助:
国家自然科学基金（61368001）

Two-way Quantum Teleportation via GHZ Quadripartite Entangled State

HU Yu-an , YE Zhi-qing

College of Physics and Communication Electronic;Key Laboratory of Photoelectronics & Telecommunication of Jiang xi Province,Jiang xi Normal University,Nanchang 330022,China

Published:2014-05-28 Online:2014-05-27

摘要/Abstract

摘要： 提出了一种用四粒子GHZ纠缠态作为量子信道，实现量子双向隐形传态的方案。通信双方Alice和Bob事先共享俩对四粒子GHZ纠缠态。通信开始后，Alice和Bob分别对自己拥有的粒子作量子投影测量，并将测量结果通过经典信道告诉对方。Alice和Bob根据对方提供的测量结果，做相应的幺正变换，即在己方的粒子上再现对方要传的量子信息，从而实现整个双向传态的目的。只要通信双方事先选取合适的GHZ纠缠态作为量子信道以及分发不同对应的纠缠粒子即可分别实现单量子比特任意态、双量子比特Bell纠缠态和三量子比特GHZ纠缠态的双向隐形传态。

关键词: 量子光学, 双向隐形传态, 四粒子GHZ纠缠态, 量子投影测量, 幺正操作

Abstract: A scheme of two-way teleportation was proposed, with GHZ quadripartite entangled state as Quantum Channel. Two sides of communication(Alice and Bob), shared two pairs of GHZ quadripartite entangled state in advance. After communication, Alice and Bob performed quantum projection measurement on their own qubits respectively, and announced the measured results via Classical Channel. Then according to the measured results presented by the other party, Alice and Bob could make appropriate unitary transformations that its own party can reconstruct the opposite quantum state information, and thus the whole two-way teleportation was realized. As long as the both sides of communication chose the suitable GHZ entangled state as quantum channel and distributed the entangled partites imparity and properly in advance, we were able to realize two-way teleporting unknown general one qubit and two qubits entangled Bell state or three qubits entangled GHZ state respectively.

Key words: Quantum optics, Two-way quantum teleportation, GHZ quadripartite entangled state, Quantum projection measurement, Unitary transformation

中图分类号:

O431.2

胡钰安，叶志清. 基于四粒子GHZ纠缠态实现双向隐形传态[J]. J4, 2014, 31(3): 285-290.

HU Yu-an , YE Zhi-qing. Two-way Quantum Teleportation via GHZ Quadripartite Entangled State[J]. J4, 2014, 31(3): 285-290.

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