量子密钥分配
计算机科学
发射机
键控
计算机网络
相移键控
保密
协议(科学)
误码率
窃听
传输(电信)
安全通信
自由空间光通信
电子工程
拓扑(电路)
光通信
电信
物理
光学
工程类
解码方法
频道(广播)
光子
作者
Phuc V. Trinh,Anh T. Pham
出处
期刊:International Conference on Communications
日期:2017-05-01
被引量:5
标识
DOI:10.1109/icc.2017.7996809
摘要
This paper proposes a novel two-way free-space quantum key distribution (QKD) protocol, which can be implemented using standard free-space optical (FSO) systems with subcarrier intensity-modulation (SIM) binary phase-shift-keying (BPSK) and direct-detection (DD) receiver. Different eavesdropping threats, including unauthorized receiver, beam-splitting, and intercept-resend attacks, are considered in the security analysis of the proposed protocol. Under the constraints on security requirements, we analytically investigate the design criteria for transmitter and receiver, in particular, the intensity modulation depth at the transmitter and the dual-threshold setting of the receiver in two-way free-space QKD systems. Quantum bit error rate (QBER), the ergodic secret-key rate, and the probability of detecting eavesdropper of the proposed system are analytically derived in closed-form expressions, considering the atmospheric loss, turbulence, and receiver noises.
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