基于第三方控制的量子双向传态

J4 ›› 2012, Vol. 29 ›› Issue (6): 683-687.

基于第三方控制的量子双向传态

邹昕¹, 叶志清²

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

收稿日期:2011-12-06 修回日期:2012-03-22 出版日期:2012-11-28 发布日期:2014-03-20
通讯作者: 叶志清（1960-），教授，研究领域为光电子器件，光量子通信。 E-mail:yezhiqing2008@163.com
作者简介:邹昕（1988-），研究生，研究领域为光量子通信。E-mail: zouxin-88@163.com
基金资助:
国家自然科学基金（60967002）、江西省自然科学基金（20114BAB202003）、江西省教育厅科技项目（GJJ10401）

Two-way quantum teleportation controlled by a third party

ZOU Xin¹，YE Zhiqing²

1 Department of Physics, Jiangxi Normal University, Nanchang 330022， China；
2 Key Laboratory of Photoelectronic & Telecommunication of Jiangxi Province, Nanchang 330022 China

Received:2011-12-06 Revised:2012-03-22 Published:2012-11-28 Online:2014-03-20

摘要/Abstract

摘要：

提出一个基于第三方控制的量子双向传态方案：通信双方Alice、Bob和控制方Charlie事先共享一个六粒子团簇态，通信开始后，Alice、Bob分别对自己拥有的部分粒子作Bell基联合测量（BSM），若控制方同意双方通信，则对自己拥有的粒子对作测量，将粒子所处的态公布；通信双方根据控制方公布的测量结果，对各自的某些粒子作适当的幺正变换，即可在这些粒子上重建对方要传的态。由于加入了第三方的控制，双向传态的安全性得到了提高。

关键词: 量子光学, 双向传态, Bell基联合测量, 六粒子团簇态, 第三方控制

Abstract:

A scheme of two-way quantum teleportation controlled by a third party was proposed: two sides of communication (Alice and Bob) and the controller Charlie shared a six-qubit cluster state in advance. Firstly, Alice and Bob performed Bell-state measurements(BSMs) on parts of their qubit pairs respectively. If Charlie agreed them to communication, he should measure his qubits and announce their states. According to Charlie’s measured results, the two sides of communication performed some appropriately unitary transformations on their qubits respectively. Then they were able to reconstruct each other’s unknown state on their own qubits. The security of two-way communication has been improved because of the control of the third party.

Key words: quantum optics, two-way teleportation, Bell-state measurement, six-qubit cluster state, controlled by a third party

中图分类号:

TN918

邹昕叶志清. 基于第三方控制的量子双向传态[J]. J4, 2012, 29(6): 683-687.

ZOU Xin，YE Zhiqing. Two-way quantum teleportation controlled by a third party[J]. J4, 2012, 29(6): 683-687.

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