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5 March 2022 Calibrating single-photon detectors for photon counting and quantum correlation measurements
Anthony J. Bennett, Rachel Clark
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Proceedings Volume PC12009, Quantum Sensing and Nano Electronics and Photonics XVIII; PC120090Q (2022) https://doi.org/10.1117/12.2608260
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Photonic quantum technologies require single photon sources and detectors operating at high efficiency, but at high rates detector imperfections can lead to inaccurate measurements. We show that the combination of the detector deadtime and the source statistics together determine the saturation level of a single photon detector, with anti-bunched sources leading to a greater detection rate than coherent or thermal light of the same intensity. At high photon rates this behavior distorts second-, third- and fourth- order correlation measurements, in agreement with our numerical simulations. Finally, we discuss the implications for entangled light detection and photonic logic.
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Anthony J. Bennett and Rachel Clark "Calibrating single-photon detectors for photon counting and quantum correlation measurements", Proc. SPIE PC12009, Quantum Sensing and Nano Electronics and Photonics XVIII, PC120090Q (5 March 2022); https://doi.org/10.1117/12.2608260
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KEYWORDS
Sensors
Single photon detectors
Calibration
Photon counting
Light sources
Quantum efficiency
Quantum information processing
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