论文标题
少数光子检测器的对比度分辨率
Contrast resolution of few-photon detectors
论文作者
论文摘要
我们分析了在低光强度下单色，像素化图像采集系统中不同强度区分不同强度的能力。在实践中，后者意味着每个像素都检测到每个获得的图像框架的可计数光子数量。我们主要是根据点击检测类型和光子数分辨率（PNR）类型的检测器比较系统，但是我们的模型可以在两者之间无缝插值。我们还讨论了分配正确强度（或“灰色级别”）中错误的可能性，最后我们讨论了如何根据所检测到的光子数的随机性质而基于阈值的估计水平。总体而言，我们发现基于PNR探测器的系统即使在相当不理想的条件下，基于点击探测器的系统也具有优势。
We analyse the capability of distinguishing between different intensities in a monochromatic, pixellated image acquisition system at low light intensities. In practice, the latter means that each pixel detects a countable number of photons per acquired image frame. Primarily we compare systems based on pixels of the click-detection type and photon-number resolving (PNR) type of detectors, but our model can seamlessly interpolate between the two. We also discuss the probability of errors in assigning the correct intensity (or "gray level"), and finally we discuss how the estimated levels, that need to be based on threshold levels due to the stochastic nature of the detected photon number, should be assigned. Overall, we find that PNR detector-based system offer advantages over click-detector-based systems even under rather non-ideal conditions.
