Open AccessAnalysis of the chromatic dispersion effect on the subcarrier wave QKD system
Author(s) -
Fedor Kiselev,
Eduard Samsonov,
Roman Goncharov,
Vladimir Chistiakov,
A Halturinsky,
V. I. Egorov,
Anton Kozubov,
Andrei Gaidash,
A.V. Gleim
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.403293
Subject(s) - quantum key distribution , optics , dispersion (optics) , modal dispersion , polarization mode dispersion , subcarrier , physics , optical communication , computer science , optical fiber , telecommunications , dispersion shifted fiber , fiber optic sensor , photon , channel (broadcasting) , orthogonal frequency division multiplexing
In this paper we investigate the chromatic dispersion impact on the quantum key distribution system based on multi-mode weak coherent phase-coded states. We provide an asymptotic secure key rate estimation, taking into account error detection probability due to chromatic dispersion. We demonstrate numerically and experimentally that the effect of chromatic dispersion in an optical fiber without any compensation hinders the secret key distribution at a distance more than 53 km. Finally, we propose a modification to the considered quantum communication system in order to mitigate the influence of chromatic dispersion on its performance.