An Efficient Control Signal Generation Scheme for QKD System

In a QKD system, it is essential to generate many types of control signals to guarantee the proper operations of all physical devices. Although many practical QKD systems have been developed, the control signal generation scheme has not been studied thoroughly enough. In this paper, an efficient control signal generation scheme based on FPGA is proposed. Our scheme has the advantages of high precision, large adjusting range and high reliability. Both the analysis and experimental results verify the feasibility and high performance of the scheme.