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中文摘要：
符合测量在量子光学实验中有着重要的应用，它可以用于测量纠缠光子对和单光子干涉等实验。在使用过程中，经常用到三通道或更多通道的符合测量，这种情况下简单的门电路无法满足使用要求，而现场可编程门阵列（FPGA）为实现低成本、小体积的多通道符合计数系统提供了解决方案。同时，基于FPGA的多通道符合计数系统还可以提供ns精度的符合分辨时间，避免本底光噪声对探测器的影响，从而有效抑制偶然符合，进一步提高了多通道符合计数系统的性能。本文介绍了基于FPGA的多通道符合计数器，并实验测量了单光子探测器信号的符合计数。
英文摘要：
Coincidence counting polarization entangled photons counting often needs more than is widely used in quantum and single 3 channels. Gate Array） instead of discrete logic chips. Coincidence counter based on FPGA c ns. Thi channel photon s helps to avoid noised caused coincidence counter based on counting modules. photon interf In this case, it FPGA also ould support coincid by background ligh It could be used in measuring the pairs of erence. In quantum experiments, coincidence is necessary to use FPGA （Field-Programmable has the advantage of low cost and small size. ence time window from 1 ns to several hundred t. This paper introduces the principle of multichannel coincidence counter based onFPGA and gives its performance experimentally with two singl ephoton counting modules.
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