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Absolute calibration of a single-photon avalanche detector using a bright triggered single-photon source based on an InGaAs quantum dot
Citation key 2021_07_Georgieva
Author Hristina Georgieva and Marco López and Helmuth Hofer and Niklas Kanold and Arsenty Kaganskiy and Sven Rodt and Stephan Reitzenstein and Stefan Kück
Pages 23500–23507
Year 2021
DOI 10.1364/OE.430680
Journal Opt. Express
Volume 29
Number 15
Month Jul
Publisher OSA
Abstract We apply an InGaAs quantum dot based single-photon source for the absolute detection efficiency calibration of a silicon single-photon avalanche diode operating in Geiger mode. The single-photon source delivers up to (2.55\&\#x2009;\&\#x00B1;\&\#x2009;0.02) \&\#x00D7; 106 photons per second inside a multimode fiber at the wavelength of 929.8 nm for above-band pulsed excitation with a repetition rate of 80 MHz. The purity of the single-photon emission, expressed by the value of the 2nd order correlation function g(2)(\&\#x03C4;\&\#x2009;\&\#x003D;\&\#x2009;0), is between 0.14 and 0.24 depending on the excitation power applied to the quantum dot. The single-photon flux is sufficient to be measured with an analog low-noise reference detector, which is traceable to the national standard for optical radiant flux. The measured detection efficiency using the single-photon source remains constant within the measurement uncertainty for different photon fluxes. The corresponding weighted mean thus amounts to 0.3263 with a standard uncertainty of 0.0022.
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