量子与经典融合安全通信关键技术研究

Key Technology of Quantum and Classical Fusion Secure Communication

针对实际QKD系统应用,本文总结了量子密钥分发系统中所使用的相位调制器、波长选择开关等基础器件特性的研究。以双M-Z型QKD系统为例,提出了利用相位调制器进行相位实时跟踪补偿的系统模型,利用SPDM功能模块技术,提出以单光子探测光子统计计数表征干涉相位漂移的实时检测与补偿方法;采用WSS技术弹性管理波长,解决QKD系统接入网多波长复用技术难题;总结提出的基于DD-OFDM系统无源光器件特性测试方案,监测量子通信与经典通信融合接入网,改善系统稳定性,这对于量子通信实用化和产业化发展有重要意义。

In lighi of practical QKD system application, phase modulator WSS （ Wavelength Stalere Switch） , and other basic deviccs in quantum key distribution system are discussed. Faking double M-Z QKD system as an example, the system model of phase real-lime lrackillg cnmpensalion based on phase modulator is proposed. Then, real-lime delelion and pholon counling statistics from single photon deletion is also presentted via the technology of SPDM funclinn module. Moreover, WSS technology is adopted to flexibly manage the wavelength, thus solving the technical problem of QKD system AN （Access Network） muhi-wawdength muhiplexing. Tesling scheme for passive optical device charaleristits based on DD-OFDM system is proposed, thus to monitor quantum communication and classical communication fusion AN, and improve system stability. And Ibis is of great significance for quantum communication application and induslrializationdevelopment.