Xu Junpei, Wang Anbang, Zhang Xinhui, Mo Laihong, Zhang Yuhe, Sun Yuehui, Qin Yuwen, Wang Yuncai
Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China.
Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of Education of China, Guangdong University of Technology, Guangzhou 510006, China.
Entropy (Basel). 2024 Feb 21;26(3):181. doi: 10.3390/e26030181.
We propose and experimentally demonstrate a wireless-channel key distribution scheme based on laser synchronization induced by a common wireless random signal. Two semiconductor lasers are synchronized under injection of the drive signal after electrical-optical conversion and emit irregular outputs that are used to generate shared keys. Our proof-of-concept experiment using a complex drive signal achieved a secure key generation rate of up to 150 Mbit/s with a bit error rate below 3.8 × 10. Numerical simulation results show that the proposed scheme has the potential to achieve a distribution distance of several hundred meters. It is believed that common-signal-induced laser synchronization paves the way for high-speed wireless physical-layer key distribution.
我们提出并通过实验证明了一种基于由公共无线随机信号诱导的激光同步的无线信道密钥分发方案。两个半导体激光器在电光转换后注入驱动信号的情况下实现同步，并发射不规则输出，这些输出用于生成共享密钥。我们使用复杂驱动信号的概念验证实验实现了高达150 Mbit/s的安全密钥生成速率，误码率低于3.8×10。数值模拟结果表明，该方案有潜力实现数百米的分发距离。据信，公共信号诱导的激光同步为高速无线物理层密钥分发铺平了道路。
