Continuous variable quantum key distribution system based on independent clock sources and implementation method

The invention discloses a continuous variable quantum key distribution system based on independent clock sources and an implementation method. A first clock source provides a reference clock signal to a quantum key sending end, and a second clock source provides a reference clock signal to a quantum key receiving end; before the sending end and the receiving end begin to establish a key, the first clock source and the second clock source perform clock synchronization through a classical channel, and after synchronization, two clocks run independently and do not influence each other. The continuous variable quantum key distribution system based on independent clock sources solves the security vulnerabilities that a synchronous cock signal is easy to steal during transmission in a communication process, and further improves actual security of the continuous variable quantum key distribution system. 本发明公开了种基于独立时钟源的连续变量量子密钥分发系统及实现方法，第时钟源向量子密钥发送端提供参考时钟信号，第二时钟源向量子密钥接收端提供参考时钟信号；在发送端和接收端开始建立密钥之前，第时钟源与第二时钟源通过经典信道进行时钟同