Study of the characteristics of the synchronization algorithm for a quantum key distribution system based on comparing the number of samples from an adjacent pair of time windows with a threshold level

The analysis of time and probabilistic characteristics is carried out for a two-stage synchronization algorithm in a quantum key distribution (QKD) system with automatic compensation of polarization distortions. Formulas are obtained for calculating the missing probabilities a signal pair of windows...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-03, Vol.1069 (1), p.12011
Main Authors: Mironov, Y K, Mironova, P D, Rumyantsev, K E
Format: Article
Language:English
Subjects:
Algorithms
Avalanche diodes
False alarms
Mathematical analysis
Normal distribution
Photodiodes
Photon avalanches
Photons
Quantum cryptography
Statistical analysis
Synchronism
Windows (intervals)
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Summary:The analysis of time and probabilistic characteristics is carried out for a two-stage synchronization algorithm in a quantum key distribution (QKD) system with automatic compensation of polarization distortions. Formulas are obtained for calculating the missing probabilities a signal pair of windows, false alarm and successful synchronization. The dependences of the missing probability a signal pair on the average number of photons and noise pulses are investigated during the analysis of a pair of windows for different threshold levels. The numerical material obtained in the course of the study indicates the possibility of using for express calculations the probability of detecting a signal pair of windows formulas oriented to the normal distribution of the number of recorded pulses at the output of a single-photon avalanche photodiode.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1069/1/012011