激光与光电子学进展, 2016, 53 (4): 040601, 网络出版: 2016-03-25
光纤量子密钥分发系统中的偏振无关相位调制 下载: 630次
Polarization-Insensitive Phase Modulation in Fiber Quantum Key Distribution System
量子光学 量子密钥分配 即插即用 偏振无关 相位调制 quantum optics quantum key distribution plug and play polarization-insensitive phase modulation
摘要
提出并实验验证了一种简单稳健的实现偏振无关相位调制的方法。基于偏振相关的相位调制器,借助法拉第旋转镜,根据光在反射前和反射后的偏振状态的变化,实现了光的偏振无关的调制,实验的中心波长为1550 nm,可见度达到96.96%,且可长时间保持稳定。将其应用于“即插即用”的量子密钥分配方案中有效地保证了传输的稳定性和实用性。
Abstract
It introduces a simple and robust polarization-insensitive phase modulation method that is suitable for a plug and play quantum key distribution system, with a Faraday mirror and polarization sensitive phase modulator. The pulse is modulated twice acorrding to its polarization before and after it is reflected by a Faraday mirror. Preliminary experiments at 1550 nm wavelength demonstrate an interference visibility as high as 96%, regardless of the polarization of the signal.
李瑞雪, 马海强, 韦克金, 朱武, 刘宏伟. 光纤量子密钥分发系统中的偏振无关相位调制[J]. 激光与光电子学进展, 2016, 53(4): 040601. Li Ruixue, Ma Haiqiang, Wei Kejin, Zhu Wu, Liu Hongwei. Polarization-Insensitive Phase Modulation in Fiber Quantum Key Distribution System[J]. Laser & Optoelectronics Progress, 2016, 53(4): 040601.