The avalanche delay effect in sine-gated single-photon detector based on InGaAs/InP SPADs

Alexandr Filyaev; Anton Losev; Vladimir Zavodilenko; Igor Pavlov

The avalanche delay effect in sine-gated single-photon detector based on InGaAs/InP SPADs

Instrumentation and Detectors 2023-10-09 v1 Quantum Physics

Authors: Alexandr Filyaev , Anton Losev , Vladimir Zavodilenko , Igor Pavlov

Abstract

A sine-gated single-photon detector (SPD) intended for use in a quantum key distribution (QKD) system is considered in this paper. An "avalanche delay" effect in the sine-gated SPD is revealed. This effect consists in the appearance of an avalanche triggered at the next gate after the photon arrival gate. It has been determined experimentally that the nature of this effect is not related to the known effects of afterpulsing or charge persistence. This effect negatively affects the overall error rate in the QKD system. The influence of the main detector control parameters, such as temperature, gate amplitude and comparator's threshold voltage, on the avalanche delay effect was experimentally established.

Keywords

single-photon detector sine-gated SPD avalanche delay InGaAs/InP SPAD quantum key distribution afterpulsing

Cite

@article{arxiv.2310.04281,
  title  = {The avalanche delay effect in sine-gated single-photon detector based on InGaAs/InP SPADs},
  author = {Alexandr Filyaev and Anton Losev and Vladimir Zavodilenko and Igor Pavlov},
  journal= {arXiv preprint arXiv:2310.04281},
  year   = {2023}
}

The avalanche delay effect in sine-gated single-photon detector based on InGaAs/InP SPADs

Abstract

Keywords

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