Acquisition of multiple photon pairs with an EMCCD camera
Acquisition of multiple photon pairs with an EMCCD camera
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DOI：
10.1088/2040-8986/aa52d8
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发表时间：
2017-05-01
影响因子：
2.1
通讯作者：
Leach, Jonathan
中科院分区：
文献类型：
--
作者：
Bolduc, Eliot;Faccio, Daniele;Leach, Jonathan
光的量子态的探测和表征在量子科学中占有重要的地位。传统的方法使用单光子探测器，但这些方法通常局限于点测量；因此，多像素器件现在被用于量子测量，特别是在量子成像领域。在这里，我们演示了EMCCD相机记录由参数下转换产生的多个符合事件的能力，其中每个像素的平均光子数远大于1。相机的多像素特性使我们能够记录每帧从近似到1到10,000个重合的相关性。这种量子测量方法提供了记录明亮关联光子源的量子签名的机制。
The detection and characterization of quantum states of light plays an important role in quantum science. Traditional methods use single-photon detectors, but these are generally limited to point measurements; consequently, multi-pixel devices are now being utilized in quantum measurements, especially in the field of quantum imaging. Here, we demonstrate the capability of an EMCCD camera to record multiple coincidence events originating from parametric downconversion where the mean photon number per pixel is much greater than unity. The multipixel nature of the camera enables us to record correlations ranging from approximate to 1 to 10 000 coincidences per frame. This approach to quantum measurements provide mechanisms for recording quantum signatures for bright correlated photon sources.