Photocounting statistics of superconducting nanowire single-photon detectors
arXiv:2206.04032 · doi:10.1103/PhysRevA.105.063716
Abstract
Superconducting nanowire single-photon detectors (SNSPDs) are efficient measurement devices used for counting single photons. The field of their applications covers experimental quantum-optical studies, optical quantum computing, quantum communication, and others. After registering a photon by such a detector, the next one cannot be registered during the dead time and after that this ability is smoothly restored. We have included this feature into the photodetection theory and introduced the corresponding photocounting formula. In the regime of continuous-wave detection, the photocounting statistics nonlinearly depends on the density operator due to a memory effect of previous measurement time windows. The considered examples demonstrate the strong influence of the relaxation process and the memory effect on the resulting photocounting statistics of the SNSPDs.
16 pages, 5 figures
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Cited by in corpus (6)
- Photocounting measurements with dead time and afterpulses in the continuous-wave regime
- Photon-number resolution with microwave Josephson photomultipliers
- Realistic photon-number resolution in generalized Hong-Ou-Mandel experiment
- Tight inequalities for nonclassicality of measurement statistics
- Nonclassical photocounting statistics with a single on-off detector
- Realistic photon-number resolution in Gaussian boson sampling