title: Development of a low-noise semiconductor single photon detector for quantum communications
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð½Ð¸Ð·ÐºÐ¾ÑÑÐ¼ÑÑÐµÐ³Ð¾ Ð¿Ð¾Ð»ÑÐ¿ÑÐ¾Ð²Ð¾Ð´Ð½Ð¸ÐºÐ¾Ð²Ð¾Ð³Ð¾ Ð´ÐµÑÐµÐºÑÐ¾ÑÐ° Ð¾Ð´Ð¸Ð½Ð¾ÑÐ½ÑÑ ÑÐ¾ÑÐ¾Ð½Ð¾Ð² Ð´Ð»Ñ ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÑ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¹
Creators: name: ÐÑ Ð®Ð°Ð½ÑÑÑÐ¾
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÐÐµÑÐµÐºÑÐ¾ÑÑ
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Ð»Ð°Ð²Ð¸Ð½Ð½ÑÐ¹ ÑÐ¾ÑÐ¾Ð´Ð¸Ð¾Ð´
Ð»Ð°Ð²Ð¸Ð½Ð½Ð¾Ðµ Ð³Ð°ÑÐµÐ½Ð¸Ðµ
Ð²ÐµÑÐ¾ÑÑÐ½Ð¾ÑÑÑ Ð¿Ð¾ÑÐ»ÐµÐ¸Ð¼Ð¿ÑÐ»ÑÑÐ°
ÑÐ¸ÑÑÐµÐ¼Ð° Ð¾Ñ Ð»Ð°Ð¶Ð´ÐµÐ½Ð¸Ñ
ÑÐµÐ¼Ð½Ð¾Ð²Ð°Ñ ÑÐºÐ¾ÑÐ¾ÑÑÑ ÑÑÐµÑÐ°
ÐºÐ²Ð°Ð½ÑÐ¾Ð²Ð°Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ
ÑÑÐ¾Ð²ÐµÐ½Ñ ÑÑÐ¼Ð°
Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ Ð¡ÑÐ¸ÑÐ»Ð¸Ð½Ð³Ð°
ÑÐ»ÐµÐ¼ÐµÐ½Ñ ÐÐµÐ»ÑÑÑÐµ
avalanche photo diode
avalanche quenching
afterpulse probability
cooling system
dark count rate
quantum efficiency
noise level
stirling engine
peltier element

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description: The subject of the graduate qualification work is âDevelopment of a low-noise semiconductor single photon detector for quantum communicationsâ. The given work is devoted to the development of a single photon detector for work in the field of quantum communications. The purpose of the work is to develop and design a single photon detector with specified parameters based on an avalanche photodiode operating in continuous mode. As a result of the research work, methods of counting single photons, principles of operation of avalanche photodiodes and their device, modes of operation of avalanche photodiodes were studied. The basic principles of quantum communication based on the BB84 protocol were also considered. The existing technical solutions of single photon detectors used in the field of quantum cryptography were analyzed. As part of the work, the modes of operation of the avalanche photodiode, the schemes of active and passive avalanche extinguishing after the detection of a photon by a diode were studied. The detector under development uses a mixed avalanche damping scheme for a diode operating in continuous mode. The main methods of diode cooling using Peltier elements and Stirling machines were considered. Experimental dependences for dark samples on the APD temperature were obtained.