Experimental observation of anomalous supralinear response of single-photon detectors

@article{Hlouek2021ExperimentalOO,
  title={Experimental observation of anomalous supralinear response of single-photon detectors},
  author={Josef Hlou{\vs}ek and Ivo Straka and Miroslav Je{\vz}ek},
  journal={Quantum 2.0 Conference and Exhibition},
  year={2021}
}
We demonstrate a direct single-source method for absolute measurement of nonlinearity of SPADs and SNSPDs with unprecedented accuracy. We discover supralinear behavior of SPADs and show that it cannot be explained using known theoretical models. 
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