Journal
SENSORS
Volume 20, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/s20123475
Keywords
single photon counting; HOM effect; Tpx3Cam
Funding
- U.S. Department of Energy QuantISED award
- Ministry of Education, Youth and Sports [LM2018109]
- Centre of Advanced Applied Sciences [CZ.02.1.01/0.0/0.0/16-019/0000778]
- European Union
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The uses of a silicon-pixel camera with very good time resolution (similar to 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.
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