用增强型sCMOS相机对Hong-Ou-Mandel干涉进行逐点成像
Shot-by-shot imaging of Hong-Ou-Mandel interference with an intensified sCMOS camera
摘要：
我们首次观测到具有空间分辨率的高度不可分辨光子对的Hong-Ou-Mandel（HOM）干涉。用增强的sCMOS相机系统对双光子聚结的直接成像清楚地揭示了在两种模式之一内成对出现的空间分离的光子。通过使用相机系统，我们量化了对的数量，并恢复了完整的HOM下降，产生96.3%的干涉可见性，以及检索合并对的数量。我们检索的空间模式结构的干涉光子进行了一个新的，低噪声高分辨率符合成像方案的原理证明演示。
英文摘要：
We report the first observation of Hong-Ou-Mandel (HOM) interference of highly indistinguishable photon pairs with spatial resolution. Direct imaging of two-photon coalescence with an intensified sCMOS camera system clearly reveals spatially separated photons appearing pairwise within one of the two modes. With the use of the camera system we quantified the number of pairs and recovered the full HOM dip yielding 96.3% interference visibility, as well as retrieved the number of coalesced pairs. We retrieved the spatial mode structure of both interfering photons by performing a proof-of-principle demonstration of a new, low noise high resolution coincidence imaging scheme.
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