Quantum Key Agreement Against Collective Decoherence

被引：47

作者：

Huang, Wei ^{[1
,2
]}

Su, Qi ^{[1
]}

Wu, Xia ^{[1
]}

Li, Yan-Bing ^{[3
]}

Sun, Ying ^{[3
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Networking & Switching Technol, Beijing 100876, Peoples R China

[2] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China

[3] Beijing Elect Sci & Technol Inst, Beijing 100070, Peoples R China

来源：

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2014年 / 53卷 / 09期

基金：

北京市自然科学基金;

关键词：

Quantum cryptography; Quantum key agreement; Collective decoherence; Decoherence-free subspace; PROTOCOL; CRYPTOGRAPHY; SIGNATURE; ROBUST;

D O I：

10.1007/s10773-014-2087-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A robust and efficient quantum key agreement (QKA) protocol is presented with decoherence-free (DF) states and single-particle measurements. Compared with all the previous QKA protocols, which are designed in ideal condition, this protocol can not only guarantee both the security and fairness of the shared key but also be immune to collective decoherence. In addition, our protocol has a high intrinsic efficiency due to the utilization of the delayed measurement technique. Finally, we show that the proposed protocol is secure against the attacks from both outside eavesdroppers and inside dishonest participants.

引用

页码：2891 / 2901

页数：11

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