Design and Security Analysis of Quantum Key Distribution Protocol Over Free-Space Optics Using Dual-Threshold Direct-Detection Receiver
Design and Security Analysis of Quantum Key Distribution Protocol Over Free-Space Optics Using Dual-Threshold Direct-Detection Receiver
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DOI：
10.1109/access.2018.2800291
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发表时间：
2018-01-01
期刊：
影响因子：
3.9
通讯作者：
Pham, Anh T.
中科院分区：
文献类型：
--
作者：
Trinh, Phuc V.;Pham, Thanh V.;Pham, Anh T.
提出了一种新的自由空间光量子密钥分发协议的设计方案，并分析了该协议的安全性能。与传统的基于量子力学物理特性的QKD协议不同，所提出的QKD协议可以在标准的FSO系统上使用子载波强度调制二进制相移键控和双阈值接收机的直接检测来实现。在安全约束条件下，分析了FSO发射机和接收机的设计准则，特别是调制深度和双门限检测的选择。对于安全性分析，量子比特错误率，遍历密钥速率，并最终密钥创建率简明地推导出在新的封闭形式的有限幂级数的表达式，考虑到信道损耗，大气干扰引起的衰落，和接收机噪声。此外，蒙特-卡罗模拟进行了验证分析结果和建议的QKD协议的可行性。
This paper proposes a novel design and analyzes security performance of quantum key distribution (QKD) protocol over free-space optics (FSO). Unlike conventional QKD protocols based on physical characteristics of quantum mechanics, the proposed QKD protocol can be implemented on standard FSO systems using subcarrier intensity modulation binary phase shift keying and direct detection with a dual-threshold receiver. Under security constraints, the design criteria for FSO transmitter and receiver, in particular, the modulation depth and the selection of dual-threshold detection, respectively, is analytically investigated. For the security analysis, quantum bit error rate, ergodic secret-key rate, and final key-creation rate are concisely derived in novel closed-form expressions in terms of finite power series, taking into account the channel loss, atmospheric turbulence-induced fading, and receiver noises. Furthermore, Monte-Carlo simulations are performed to verify analytical results and the feasibility of the proposed QKD protocol.