Vol. 16, no.2, 2024
РусскийEnglish
INFORMATION TECHNOLOGIES
Key features of continuous-variable quantum key distribution protocols
Evgenii V. Burlakov, Alexander V. Korobov
Moscow Technical University of Communications and Informatics, https://mtuci.ru/
Moscow 111024, Russian Federation
E-mail: e.v.burlakov@mtuci.ru, a.v.korobov@mtuci.ru
Received November 08, 2023, peer-reviewed November 15, 2023, accepted November 22, 2023, published April 25, 2024
Abstract: The key features of continuous variables quantum key distribution protocols are considered in the paper. The motivation for studying and developing methods of quantum cryptography is substantiated. The main aspects inherent to continuous-variable protocols are highlighted, and they are classified based on various characteristics, peculiarities, and implementation variants. A detailed examination of a protocol example with discrete modulation and signal registration through balanced homodyne detection is provided. A classification of attacks on the quantum protocol is presented. A general overview of post-processing methods is given. The role of noise is indicated, and approaches to assessing the level of security applicable to continuous-variable protocols are discussed. In conclusion, the main conclusions regarding the current status of this problem are presented, and aspects requiring further study are identified.
Keywords: quantum information, quantum cryptography, quantum key distribution, continuous variables, homodyne detection
PACS: 03.67.Dd, 42.50.Dv, 89.70.+c
RENSIT, 2024, 16(2):255-266e DOI: 10.17725/j.rensit.2024.16.255
Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/552/16(2)255-266e.pdf