National Research Council of Canada, 100 Sussex Drive, Ottawa, ON, K1A 0R6, Canada.
Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
Sci Rep. 2023 Jan 18;13(1):1009. doi: 10.1038/s41598-023-27842-7.
We show a simple yet effective method that can be used to characterize the per pixel quantum efficiency and temporal resolution of a single photon event camera for quantum imaging applications. Utilizing photon pairs generated through spontaneous parametric down-conversion, the detection efficiency of each pixel, and the temporal resolution of the system, are extracted through coincidence measurements. We use this method to evaluate the TPX3CAM, with appended image intensifier, and measure an average efficiency of [Formula: see text]% and a temporal resolution of 7.3 ns. Furthermore, this technique reveals important error mechanisms that can occur in post-processing. We expect that this technique, and elements therein, will be useful to characterise other quantum imaging systems.
我们展示了一种简单而有效的方法，可用于对单光子事件相机的逐像素量子效率和时间分辨率进行特征化，以用于量子成像应用。利用通过自发参量下转换产生的光子对，通过符合测量提取每个像素的检测效率和系统的时间分辨率。我们使用此方法评估了附加图像增强器的 TPX3CAM，并测量得到平均效率为[Formula: see text]%和 7.3 ns 的时间分辨率。此外，该技术揭示了在后处理中可能出现的重要误差机制。我们期望这项技术及其要素将有助于对其他量子成像系统进行特征化。
