Calibration of free-space and fiber-coupled single-photon detectors
Thomas Gerrits, Alan L. Migdall, Joshua C. Bienfang, John H. Lehman, Sae Woo Nam, Jolene D. Splett, Igor Vayshenker, Chih-Ming Wang
We measure the detection efficiency of single-photon detectors at wavelengths near 851 nm and 1533.6 nm. We investigate the spatial uniformity of one free-space-coupled single-photon avalanche diode and present a comparison between fusion-spliced and connectorized fiber-coupled single-photon detectors. We find that our expanded relative uncertainty for a single measurement of the detection efficiency is as low as 0.70 % for fiber-coupled measurements at 1533.6 nm and as high as 1.78 % for our free-space characterization at 851.7 nm. The detection-efficiency determination includes corrections for afterpulsing, dark count, and count-rate effects of the single-photon detector with the detection efficiency interpolated to operation at a specified detected count rate.
, Migdall, A.
, Bienfang, J.
, Lehman, J.
, Nam, S.
, Splett, J.
, Vayshenker, I.
and Wang, C.
Calibration of free-space and fiber-coupled single-photon detectors, Metrologia, [online], https://doi.org/10.1088/1681-7575/ab4533
(Accessed December 6, 2023)