An effective active phase compensation method for quantum key distribution system
一种高效量子密钥分发系统主动相位补偿方法

Quantum key distribution (QKD) system must be robust enough in practical communication. The system performance is notably affected by phase drift. For the fiber-based phase-encoded quantum key distribution system,the Faraday-Michelson QKD scheme can auto-compensate the birefringence of fiber,but phase drift caused by environment variations is still a serious problem in practical operation. In this paper,the major schemes to compensate for the phase drift are analyzed in detail and an five-phase effective ac...