Working modes of photodetector device of quantum cryptography system

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Authors: Zadorin A. S., Maksimov A. V., Mahorin D. A.

Annotation: There is given a comparative evaluation of linear and switching mode operation of avalanche photodiodes in a quantum key distribution. It is shown that at low speeds, the linear mode is more resistant to interference, and a Geiger one provides a maximum key generation rate.

Keywords: quantum cryptography, avalanche photodiode photon counting, linear and geiger modes