摘要
偏光镜是量子信息处理与通信等系统实验中最基本的单元,它控制着光子传输的方向。为了提高偏光镜的定位精度,减少人为因素的影响,采用了步进电机来控制偏光镜的旋转。步进电机具有精确步进、无误差累积等特点,同时利用FPGA对其进行速度和细分控制,使偏光镜的定位精度达到0.06°甚至更小。此外,还加装了微动开关来精确定位偏光镜的机械零点。
In experiment of quantum information processing and communication, polarizer is a essential element and controls the direction of photon transmission. For improving polarizer＇s locating precision and reducing manual affect, we rotate the polarizer by stepping motor which has precise stepping and no cumulation error. And it can make locating precision of polarizer get at 0. 06°or smaller by speed and subdivision controlling inside FPGA. Furthermore, we insall a jiggle switch for precisely locating the mechanical zero of the polarizer.
出处
《电子测量技术》
2009年第5期176-178,共3页
Electronic Measurement Technology
