基于三粒子非对称纠缠信道的可控密集编码

J4 ›› 2014, Vol. 31 ›› Issue (3): 305-311.

基于三粒子非对称纠缠信道的可控密集编码

张程贤，郭邦红，程广明，郭建军，范榕华，张智明，刘颂豪

华南师范大学信息光电子科技学院，广东省微纳光子功能材料与器件重点实验室，广东广州 510631

出版日期:2014-05-28 发布日期:2014-05-27
通讯作者: 郭邦红（1975—）广东化州人，副研究员，博士，主要研究方向为量子信息与光通信技术。 E-mail:guobangh@163.com
作者简介:张程贤（1987—）广西南宁人，研究生，主要研究方向为量子信息与光通信技术。E-mail: cxammh@163.com

Controlled dense coding using three-particle in the non-symmetric quantum state

ZHANG Cheng-xian, GUO Bang-hong, CHENG Guang-ming, GUO Jian-jun,F AN Rong-hua, ZHANG Zhi-ming, LIU Song-hao

Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, 510631 China

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

摘要/Abstract

摘要： 提出一种新型的基于三粒子维非对称纠缠量子信道可控密集编码方案。控制者（Charlie）对其手中2维粒子进行局域测量控制信息发送者（Alice）和接收者（Bob）量子态塌缩，调控Alice和Bob量子态纠缠，实现Alice和Bob 维非对称量子信道纠缠调控。计算了Alice和Bob非对称密集编码平均信息传送量，分析表明，Charlie通过调节测量角的大小可以控制Alice和Bob平均信息传送量。利用三粒子最大纠缠程度的维非对称纠缠量子信道，Charlie可以控制Alice和Bob密集编码传送信息量高于2比特，方案是高效的；对于非最大纠缠程度的量子信道，传送信息量受到Charlie测量角和三粒子量子态纠缠系数共同调控。

关键词: 量子信息, 密集编码, 非对称信道, 控制, 信息量, 幺正变换

Abstract: A scheme of controlled dense coding is proposed by using non-symmetric quantum channel in dimensional entangled state. The collapse of the state and the entanglement between Alice and Bob are controlled by Charlie’s local measurement on his particle in two dimension. Then the dimensional non-symmetric quantum channel is controlled. It can be seen that the average amount of transmitted information of dense coding is controlled by Charlie’s measurement angle. One can find that the average amount of information is more than 2 bits by using maximally entangled state in the non-symmetric quantum channel. Thus, this scheme is high-efficiency. In the case the entanglement is non-maximally, the transmitted information is determined by the measurement angle and the coefficient of the entangled state.

Key words: quantum information, dense coding, non-symmetric channel, control, amount of information, unitary transformation

中图分类号:

O413

张程贤，郭邦红，程广明，郭建军，范榕华，张智明，刘颂豪. 基于三粒子非对称纠缠信道的可控密集编码[J]. J4, 2014, 31(3): 305-311.

ZHANG Cheng-xian, GUO Bang-hong, CHENG Guang-ming, GUO Jian-jun,F AN Rong-hua, ZHANG Zhi-ming, LIU Song-hao. Controlled dense coding using three-particle in the non-symmetric quantum state [J]. J4, 2014, 31(3): 305-311.

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