摘要
相位量子密钥分发系统采用不等臂干涉仪对光子相位编解码,不等臂干涉仪的臂长差会随着环境发生变化,造成两端干涉仪的相对相位漂移,导致系统的误码率升高,特别在复杂的工作环境下,严重影响量子密钥分发系统的稳定性性能。针对相位漂移,分析了目前主要的解决方案,提出一种适应复杂环境的相位补偿方案,通过将传输分块处理,采用二点扫描法快速补偿相位漂移,不仅提高了相位补偿的效率,而且提高了相位补偿的准确性,为量子密钥分发系统的稳定传输奠定了基础。Abstract: The phase quantum key distribution system uses unequal arm interferometer to encode and decode the photon phase. The arm length difference of unequal arm interferometer will change with the environment, resulting in the relative phase drift of the interferometers at both ends, resulting in the increase of the bit error rate of the system, especially in the complex working environment, which seriously affects the stability and performance of the quantum key distribution system. For phase drift, the main solutions are analyzed, and a phase compensation scheme suitable for complex environment is proposed. By dividing the transmission into blocks and using two-point scanning method to quickly compensate the phase drift, it not only improves the efficiency of phase compensation, but also improves the accuracy of phase compensation, which lays a foundation for the stable transmission of quantum key distribution system.
出处
《电子乐园》
2021年第11期139-140,共2页
