| 基于不同光源下的诱骗态双向QKD协议研究 |
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| 引用本文： | 张昌宏,李鹏.基于不同光源下的诱骗态双向QKD协议研究[J].通信技术,2015,48(4):463-568. |
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| 作者姓名： | 张昌宏 李鹏 |
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| 作者单位： | 1.海军工程大学 信息安全系,湖北 武汉 430033;2.中国人民解放军92886部队,山东 胶州 263000 |
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| 摘 要： | 在量子密钥分配系统的光源特征研究中,通过实验分析了标记单光子源(HSPS)对基于诱骗态双向QKD协议系统安全性的影响。首先,基于诱骗态方法和双向QKD协议,给出使用HSPS的诱骗态双向QKD协议中单光子、双光子的计数率下限和误码率上限的计算公式;其次,计算出相应的安全密钥率公式;最后通过数值模拟,比较了不同光源下的诱骗态双向QKD协议的安全密钥率和安全传输距离,模拟结果表明HSPS光源相比WCP光源在安全密钥率和传输距离方面具有明显优势。
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| 关 键 词： | 双向QKD 光源 诱骗态 |
| 收稿时间： | 2014-10-22 |
Decoy State Two-Way QKD Protocol under Different Light Sources |
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| ZHANG Chang-hong,LI Peng.Decoy State Two-Way QKD Protocol under Different Light Sources[J].Communications Technology,2015,48(4):463-568. |
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| Authors: | ZHANG Chang-hong LI Peng |
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| Affiliation: | 1.Department of Information Security,Navy University of Engineering, Wuhan Hubei 430033, China;2.PLA Unit,92886; Jiaozhou Shandong 263000, China |
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| Abstract: | In the research on light source characteristics of QKD (Quantum Key Distribution) system, the effects of HSPS on the system sucurity based on the two-way QKD protocols of decoy state are analyzed. Firstly, the formula for lower and upper limits of the counting rate is given in the single-photon and two-photon case under the basis of decoy state method and two-way QKD protocols. Then, the formula of appropriate security key rate is calculated. Finally, through numerical modeling, the secure key rate and transmission distance are compared in different sources of decoy state two-way QKD protocol. Simulation result shows that HSPS enjoys obvious advantages over WCP in both secure key rate and transmission distance. |
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| Keywords: | two-way QKD light source decoy state |
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