论文标题
长距离自由空间量子通信的低噪声单光子检测器
A low-noise single-photon detector for long-distance free-space quantum communication
论文作者
论文摘要
我们基于SI Avalanche Photodiode Excelitas 30902SH热电学冷却至-100度的单光子检测器。 C.我们的检测器的深度计数速率低于1 Hz，直径为500 UM光敏面积，光子检测效率约50％，螺栓降低了0.35％，而定时抖动在1 ns以下。这些特征使其适用于长距离自由空间量子通信链接，我们简要讨论。我们还报告了一种改进的方法，我们称之为长期的后泵分析，用于确定和可视化不同温度下的长陷阱寿命。
We build and test a single-photon detector based on a Si avalanche photodiode Excelitas 30902SH thermoelectrically cooled to -100 deg. C. Our detector has dark count rate below 1 Hz, 500 um diameter photosensitive area, photon detection efficiency around 50%, afterpulsing less than 0.35%, and timing jitter under 1 ns. These characteristics make it suitable for long-distance free-space quantum communication links, which we briefly discuss. We also report an improved method that we call long-time afterpulsing analysis, used to determine and visualise long trap lifetimes at different temperatures.
