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Open AccessArticle

Counting of Hong-Ou-Mandel Bunched Optical Photons Using a Fast Pixel Camera

1
Brookhaven National Laboratory, Upton, NY 11973, USA
2
Department of Physics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, 115 19 Prague, Czech Republic
3
Department of Physics and Astronomy, School of Natural Sciences, University of Manchester, Manchester M13 9PL, UK
4
Moscow Institute of Physics and Technology, Institutskii Per. 9, Dolgoprudny, 141700 Moscow, Moscow Region, Russia
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(12), 3475; https://doi.org/10.3390/s20123475
Received: 15 May 2020 / Revised: 14 June 2020 / Accepted: 17 June 2020 / Published: 19 June 2020
(This article belongs to the Special Issue Multipixels Single Photon Detectors for Quantum Applications)
The uses of a silicon-pixel camera with very good time resolution (∼nanosecond) for detecting multiple, bunched optical photons is explored. We present characteristics of the camera and describe experiments proving its counting capabilities. We use a spontaneous parametric down-conversion source to generate correlated photon pairs, and exploit the Hong-Ou-Mandel (HOM) interference effect in a fiber-coupled beam splitter to bunch the pair onto the same output fiber. It is shown that the time and spatial resolution of the camera enables independent detection of two photons emerging simultaneously from a single spatial mode. View Full-Text
Keywords: single photon counting; HOM effect; Tpx3Cam single photon counting; HOM effect; Tpx3Cam
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Nomerotski, A.; Keach, M.; Stankus, P.; Svihra, P.; Vintskevich, S. Counting of Hong-Ou-Mandel Bunched Optical Photons Using a Fast Pixel Camera. Sensors 2020, 20, 3475.

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