Modern methods of detecting single photons and their application in quantum communications

We consider main methods for detecting single photons used in quantum communications, including the quantum key distribution (QKD) technology. Two most promising single photon detectors (SPDs) based on superconducting nanowires and on a single-photon avalanche diode are described. The most effective...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2021-08, Vol.51 (8), p.655-669
Main Authors: Koziy, A.A., Losev, A.V., Zavodilenko, V.V., Kurochkin, Yu.V., Gorbatsevich, A.A.
Format: Article
Language:English
Subjects:
Avalanche diodes
Industrial development
Nanowires
Photon avalanches
Photons
Quantum cryptography
quantum key distribution
single photon detector
single-photon avalanche diode
superconducting nanowires
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Summary:We consider main methods for detecting single photons used in quantum communications, including the quantum key distribution (QKD) technology. Two most promising single photon detectors (SPDs) based on superconducting nanowires and on a single-photon avalanche diode are described. The most effective SPD designs are presented and their advantages and disadvantages are analysed from the point of view of the possibility of their use in QKD devices. The results of the work of various scientific groups conducting research on QKD are discussed, which makes it possible to trace the trends in the global technological development of this industry over the past five years.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL17566