Roberts K, Gregory T, Wolley O, Padgett M J
School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
Sci Rep. 2025 Jan 7;15(1):1101. doi: 10.1038/s41598-024-84200-x.
SPDC photon-pairs exhibit spatial correlations which can be measured using detector arrays sensitive to single photons. However, these detector arrays have multiple readout modes and in order to optimise detection it is important to select the optimum mode to detect the correlations against a background of optical and electronic noise. These quantum correlations enable applications in imaging, sensing, communication, and optical processing. Here we compare the measurement of spatial correlations for a broad range of readout modes of an EMCCD camera and attempt to characterise the optimal readout mode for our purposes. This assessment is important for the use of detector arrays of different types for use in quantum, low-light, enhanced resolution, imaging systems.
自发参量下转换（SPDC）光子对呈现出空间相关性，这种相关性可以使用对单光子敏感的探测器阵列来测量。然而，这些探测器阵列具有多种读出模式，为了优化探测，在光学和电子噪声背景下选择最佳模式来探测相关性非常重要。这些量子相关性能够应用于成像、传感、通信和光学处理领域。在此，我们比较了电子倍增电荷耦合器件（EMCCD）相机多种读出模式下的空间相关性测量，并试图确定适合我们目的的最佳读出模式。这种评估对于在量子、低光、高分辨率成像系统中使用不同类型的探测器阵列至关重要。
