Theoretical analysis of quantum key distribution systems when integrated with a DWDM optical transport network

Irina Vorontsova; Roman Goncharov; Angelina Tarabrina; Fedor Kiselev; Fedor Kiselev; Vladimir Egorov; Vladimir Egorov

doi:10.1364/JOSAB.469933

Journal of the Optical Society of America B
Vol. 40,
Issue 1,
pp. 63-71
(2023)
•https://doi.org/10.1364/JOSAB.469933

Theoretical analysis of quantum key distribution systems when integrated with a DWDM optical transport network

Irina Vorontsova, Roman Goncharov, Angelina Tarabrina, Fedor Kiselev, and Vladimir Egorov

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Irina Vorontsova, Roman Goncharov, Angelina Tarabrina, Fedor Kiselev, and Vladimir Egorov, "Theoretical analysis of quantum key distribution systems when integrated with a DWDM optical transport network," J. Opt. Soc. Am. B 40, 63-71 (2023)

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Abstract

Theoretical research and numerical simulation of the noise influence caused by spontaneous Raman scattering, four-wave mixing, and linear channel cross talk on the performances of quantum key distribution (QKD) systems were conducted. Three types of QKD systems were considered: a coherent one-way QKD protocol, subcarrier-wave QKD system, and continuous-variable QKD integrated with classical dense wavelength division multiplexing (DWDM) channels. We calculate the secure key generation rate for the systems mentioned addressing different channel allocation schemes (i.e., configurations). A uniform DWDM grid is considered with a quantum channel located in the C-band and O-band (at 1310 nm) of a telecommunication window. The systems’ performances are analyzed in terms of the maximal achievable distance values. Configurations for further analysis and investigation are chosen optimally, i.e., their maximal achievable distances are the best.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Parameter	Value
$Ω$	4.8 GHz
$μ_{0}$	3.93
$m$	0.319
$ξ$	0.18 dB/km
$ϑ$	$10^{- 3}$
$Δ t$	1 ns
$η_{D}$	0.1
$p_{dark}$	$4 \times 10^{- 6}$
$δ ϕ$	$5^{\circ}$
$T$	1 ns

Parameter	Value
$τ_{dead}$	2 ns
$ρ_{AP}$	0.008
$μ$	0.2
$V$	0.98
$l_{A}$	10 m

Configuration	Number of Channels	Quantum Channel Wavelength, nm
Config. #1	10	1536.61
Config. #2	10	1310
Config. #3	40	1537.40
Config. #4	40	1310

Parameter	Value
$ξ$	0.18 dB/km
$Δ λ$	15 GHz
$N_{ch}$	10 or 40
$R_{x}$	$- 32 dBm$
IL	8 dB

QKD System	Number of Channels	Max Distance (C-Band), km	Max Distance (O-Band), km
SCW	$\frac{10}{40}$	$\frac{61.15}{32.94}$	$\frac{66.28}{65.12}$
COW	$\frac{10}{40}$	$\frac{70.59}{42.75}$	$\frac{65.06}{64.45}$
CV-QKD	$\frac{10}{40}$	$\frac{28.86}{13.27}$	$\frac{29.75}{29.44}$

Irina Vorontsova	https://orcid.org/0000-0001-9861-0816
Roman Goncharov	https://orcid.org/0000-0002-9081-8900
Angelina Tarabrina	https://orcid.org/0000-0002-7114-8438

Abstract

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Equations (44)

Journal of the Optical Society of America B