| 简单的非正交诱惑态量子密钥分配方案 |
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| 引用本文： | 周媛媛,周学军,李晓强,高俊.简单的非正交诱惑态量子密钥分配方案[J].电子科技大学学报(社会科学版),2011(2). |
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| 作者姓名： | 周媛媛 周学军 李晓强 高俊 |
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| 作者单位： | 海军工程大学电子工程学院; |
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| 基金项目： | 国家863计划(2009AAJ128) |
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| 摘 要： | 基于预报单光子光源,提出了一种实现简单的非正交一诱惑态方案。由于非正交编码协议需要估计参量的项数是BB 84协议的两倍,所以无法完全采用被动诱惑态方案来降低实现的难度。并考虑到实际应用中,激光器不能做到完全消光而无法制备真正的真空态。因此,将主动诱惑态思想和被动诱惑态思想相结合,把所需诱惑态减少为一个弱光强态。数值仿真表明,由于被动诱惑态思想的加入,非正交一诱惑态方案可以获得较高的密钥生成效率,安全传输距离较理论极限安全传输距离只少2.2 km;且相比于已经提出的非正交诱惑态方案,因为诱惑态数量的减少而更容易实现。
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| 关 键 词： | 诱惑态 非正交编码协议 量子密钥分配 密钥生成效率 安全传输距离 |
Simple Non-Orthogonal Decoy State Protocol in Quantum Key Distribution |
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| ZHOU Yuan-yuan,ZHOU Xue-jun,LI Xiao-qiang, GAO Jun.Simple Non-Orthogonal Decoy State Protocol in Quantum Key Distribution[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2011(2). |
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| Authors: | ZHOU Yuan-yuan ZHOU Xue-jun LI Xiao-qiang GAO Jun |
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| Institution: | ZHOU Yuan-yuan,ZHOU Xue-jun,LI Xiao-qiang,and GAO Jun(Electronic Engineering College,Naval University of Engineering Wuhan 430033) |
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| Abstract: | A simple non-orthogonal decoy state protocol with one weak decoy state is presented with a heralded single photon source(HSPS).Because the number of estimation terms in non-orthogonal encoding protocol is double of that in the Bennett-Brassard 1984(BB 84) protocol,the passive decoy state method is unsuitable for non-orthogonal encoding protocol to decrease the implementation difficulty.Considering the imperfect extinction ratio of the practical laser,vacuum states are not prepared easily.Therefore,this pape... |
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| Keywords: | decoy state non-orthogonal encoding protocol quantum key distribution secure key generation rate secure transmission distance |
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