Geodesic
Theoretical study of the EDFA optical amplifier implementation scheme improving the performance of a quantum key distribution system integrated with an WDM optical transport network
Nanosistemy: fizika, himiâ, matematika, Tome 14 (2023) no. 2, pp. 178-185.

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A version of an erbium doped fiber amplifier (EDFA) application scheme designed to increase the efficiency of the simultaneous quantum key distribution session and transmission of information by classical channels in a single optical fiber is explored. A theoretical study of the possibility to use EDFA in the explored way was conducted by numerical simulation methods. The mathematical model is based on the EDFA dynamics equations and the equations that determine the secure key generation rate in case of the subcarrier-wave quantum key distribution. A method for determining the optimal parameters of the scheme under study is described and the evaluation of the feasibility of using EDFA in the explored way is performed. A comparative analysis of the subcarrier-wave quantum key distribution system performance when integrated into an optical network is made in terms of the secure key generation rate for the cases when EDFA is either used or not. The results obtained demonstrate high efficiency of the scheme under study, i.e., the maximum achievable distance of the secure key distribution is increased while maintaining the efficiency of the information transmission.
Keywords: erbium-doped fiber amplifier, quantum key distribution, subcarrier-wave quantum key distribution. 
@article{NANO_2023_14_2_a4,
     author = {Daniil V. Tupyakov and Nikita A. Ivankov and Irina O. Vorontsova and Fedor D. Kiselev and Vladimir I. Egorov},
     title = {Theoretical study of the {EDFA} optical amplifier implementation scheme improving the performance of a quantum key distribution system integrated with an {WDM} optical transport network},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {178--185},
     publisher = {mathdoc},
     volume = {14},
     number = {2},
     year = {2023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2023_14_2_a4/}
}
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Daniil V. Tupyakov; Nikita A. Ivankov; Irina O. Vorontsova; Fedor D. Kiselev; Vladimir I. Egorov. Theoretical study of the EDFA optical amplifier implementation scheme improving the performance of a quantum key distribution system integrated with an WDM optical transport network. Nanosistemy: fizika, himiâ, matematika, Tome 14 (2023) no. 2, pp. 178-185. http://geodesic.mathdoc.fr/item/NANO_2023_14_2_a4/