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通过仔细分析连续变量和离散变量量子密钥分发系统的光路原理和各个光学部件性能和要求,提出了一种能用于各种量子密钥分发实验中的电路控制模块。该方案能够产生精度可达纳秒量级的时钟信号,采用Xilinx公司的Virtex-4型FPGA开发板,实现整个系统高度集成,最后利用嵌入式开发工具ISE9.1i和EDK9.1i完成了方案的实现,并生成bit文件下载进FPGA,经验证完全满足实验要求。
By carefully analyzing the optical principle and the performance and requirements of various optical components in continuous quantum and discrete quantum quantum key distribution systems, a circuit control module that can be used in various quantum key distribution experiments is proposed. This scheme can produce the clock signal to the nanosecond precision to the order of magnitude, adopt Virtex-4 FPGA development board of Xilinx Company, realize the high integration of the whole system, finish the scheme finally with embedded development tools ISE9.1i and EDK9.1i Achieve, and generate bit files downloaded into the FPGA, verified fully meet the experimental requirements.