Absolute detector calibration using twin beams
Jan Perina Jr, Ondrej Haderka, Vaclav Michalek, Martin Hamar
TL;DR
This paper introduces a method for absolute quantum detector calibration using twin beams, leveraging photocount statistics to accurately determine detection efficiency while eliminating superimposed noise.
Contribution
It presents a novel calibration technique based on joint photocount statistics of twin beams, improving accuracy over existing methods.
Findings
Effective elimination of superimposed noise in calibration
Accurate measurement of quantum detection efficiency
Superior performance compared to current approaches
Abstract
A method for the determination of absolute quantum detection efficiency is suggested based on the measurement of photocount statistics of twin beams. The measured histograms of joint signal-idler photocount statistics allow to eliminate an additional noise superimposed on an ideal calibration field composed of only photon pairs. This makes the method superior above other approaches presently used. Twin beams are described using a paired variant of quantum superposition of signal and noise.
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