中文摘要：

介绍了作为量子信息实用化试验的密钥分发系统。说明了作为重要组成部分的脉冲激光光源所需要达到的性能指标，研制驱动电路和温度控制电路，给出了测试结果和应用于系统的实际情况。

英文摘要：

As a practical use of quantum information, the quantum key distribution system is introduced in the article. The guideline of the narrow-pulse laser which is an important part of the QKD system is also explained. A driver and temperature control system for the laser are developed. Experimental results are obtained, including the practice working on the QKD system.