利用量子比特间交换衰减实现无退纠缠的量子信息传输

J4 ›› 2014, Vol. 31 ›› Issue (1): 40-46.

利用量子比特间交换衰减实现无退纠缠的量子信息传输

嵇英华¹,黄剑华¹,刘咏梅²

1 江西师范大学物理系，江西南昌 330022 2 江西师范大学数学与信息科学学院，江西南昌 330022 3 江西省光电子与通信重点实验室，江西南昌 330022

收稿日期:2013-02-22 修回日期:2013-07-26 出版日期:2014-01-28 发布日期:2013-12-31
通讯作者: 嵇英华（1960-）教授，江西临川人，主要从事量子计算与量子信息的研究。 E-mail:ahmxhxtt@aliyun.com
基金资助:
国家自然科学基金（11164009）资助课题

Achieving no decoherence quantum information transfer by using exchange decay between qubits

JI Ying-Hua HUANG Jian-Hua LIU Yong-Mei

1 Department of Physics, Jiangxi Normal University, Nanchang, Jiangxi 330022, China 2 College of Mathematics and Information Science of Jiangxi Normal University, Nanchang, Jiangxi, 330022 3 Key Laboratory of Photoelectronics and Telecommunication of Jiangxi Province, Nanchang, Jiangxi 330022, China

Received:2013-02-22 Revised:2013-07-26 Published:2014-01-28 Online:2013-12-31

摘要/Abstract

摘要： 在量子信息传输过程中，环境的作用会导致退相干与退纠缠。利用不同类型量子比特的优点，构成杂化量子比特系统是克服退相干效应，实现量子信息传输的一个有效方案。本文指出：将耦合量子比特之间信息交换过程中存在的能量损耗(量子比特间的交换衰减)，与外部环境的退相干效应有机的结合起来，可以实现无退纠缠效应的量子信息传输。给出了实现无退纠缠效应信息传输，交换衰减率与退相干时间匹配的约束关系。

关键词: 量子光学, 杂化量子比特, 交换衰减, 纠缠, 信息传输

Abstract: In quantum information transfer process, the role of the environment would cause decoherence and disentangled. Using the advantages of different types of qubits to constitute a hybrid qubits system is a useful way for overcoming decoherence effects and achieving quantum information transfer. This paper points out that through combining the energy loss in the process of information exchange of qubits (exchanging decay between the qubits) and the decoherence effects of the external environment organically, people can achieve quantum information transfer with no decoherence effects. And this paper also has given out the constraint relations matching exchange decay rate and decoherence time in no decoherence effects quantum information transfer.

Key words: information transfer

中图分类号:

O431

嵇英华黄剑华刘咏梅. 利用量子比特间交换衰减实现无退纠缠的量子信息传输[J]. J4, 2014, 31(1): 40-46.

JI Ying-Hua HUANG Jian-Hua LIU Yong-Mei . Achieving no decoherence quantum information transfer by using exchange decay between qubits[J]. J4, 2014, 31(1): 40-46.

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