使用增强型sCMOS相机对Hong-Ou-Mandel干涉进行逐脉冲成像。

Shot-by-shot imaging of Hong-Ou-Mandel interference with an intensified sCMOS camera.

作者信息

Jachura Michał, Chrapkiewicz Radosław

出版信息

Opt Lett. 2015 Apr 1;40(7):1540-3. doi: 10.1364/OL.40.001540.

DOI:10.1364/OL.40.001540

Abstract

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 counted the number of coalesced pairs. We retrieved the spatial modes of both interfering photons by performing a proof-of-principle demonstration of a new, low-noise, high-resolution coincidence imaging scheme.

摘要

我们首次报道了具有空间分辨率的高度不可区分光子对的Hong-Ou-Mandel（HOM）干涉观测结果。使用增强型sCMOS相机系统对双光子合并进行直接成像，清晰地揭示了在两种模式之一内成对出现的空间分离光子。通过该相机系统，我们对光子对的数量进行了量化，恢复了完整的HOM凹陷，干涉可见度达到96.3%，同时还对合并光子对的数量进行了计数。通过对一种新的、低噪声、高分辨率符合成像方案进行原理验证演示，我们检索到了两个干涉光子的空间模式。