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Subcarrier wave continuous-variable quantum key distribution with Gaussian modulation: composable security analysis
R.K. Goncharov 1, A.D. Kiselev 1,2, E.O. Samsonov 1, V.I. Egorov 1

1 ITMO University, Leading Research Center "National Center of Quantum Internet",
199034, Saint Petersburg, Russia, Birzhevaya Line 16;
2 ITMO University, Laboratory of Quantum Processes and Measurements,
199034, Saint Petersburg, Russia, Kadetskaya Line 3

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DOI: 10.18287/2412-6179-CO-1225

Страницы: 374-380.

Язык статьи: English.

Аннотация:
In this paper, we continue the study of the quantum cryptographic GG02 protocol, performed using the approach based on the subcarrier waves. We modify the scheme via heterodyne detection and perform security analysis for the full trusted hardware noise model in the presence of collective attacks with finite-key effects. It is shown that the system can potentially distribute the key even if the level of losses in the channel is above 9 dB. This result is consistent with the general technical level and comply with modern standards of practical CV-QKD systems. Finally, the system under consideration fully meets the criterion of composability.

Ключевые слова:
continuous variables, subcarrier waves, quantum key distribution.

Благодарности
The work was done by Leading Research Center "National Center for Quantum Internet" of ITMO University by order of JSCo Russian Railways.

Цитирование:
Goncharov, R.K. Subcarrier wave continuous-variable quantum key distribution with Gaussian modulation: composable security analysis / R.K. Goncharov, A.D. Kiselev, E.O. Samsonov, V.I. Egorov // Computer Optics. – 2023. – Vol. 47(3). – P. 374-380. – DOI: 10.18287/2412-6179-CO-1225.

Citation:
Goncharov RK, Kiselev AD, Samsonov EO, Egorov VI. Subcarrier wave continuous-variable quantum key distribution with Gaussian modulation: composable security analysis. Computer Optics 2023; 47(3): 374-380. DOI: 10.18287/2412-6179-CO-1225.

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