We describe the full temporal and spatial characterization of polarization-entangled photons produced by Spontaneous Parametric Down Conversions using an intensified high-speed optical camera, Tpx3Cam. This novel technique allows for precise determination of Bell inequality parameters and for new characterization methods for the spatial distribution of entangled quantum information. We also discuss a technique to synchronize multiple cameras separated by vast distances, which will be required for a distributed quantum network.

中文翻译：

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极化纠缠的时空表征

我们使用增强型高速光学相机 Tpx3Cam 描述了由自发参量下转换产生的偏振纠缠光子的完整时间和空间表征。这种新技术可以精确确定贝尔不等式参数，并为纠缠量子信息的空间分布提供新的表征方法。我们还讨论了一种同步相隔很远的多个相机的技术，这是分布式量子网络所必需的。