Publication detail

Multiplexing Quantum and Classical Channels of a Quantum Key Distribution (QKD) System by Using the Attenuation Method

KLÍČNÍK, O. MÜNSTER, P. HORVÁTH, T.

Original Title

Multiplexing Quantum and Classical Channels of a Quantum Key Distribution (QKD) System by Using the Attenuation Method

Type

journal article in Web of Science

Language

English

Original Abstract

The primary goal in this paper is to verify the possibility of combining a quantum channel into a single optical fiber with other classical channels by using the so-called attenuation method. Since the quantum channel is very weak in terms of power, combining it into a single fiber with much more powerful classical channels is challenging. Thus, sufficiently high-quality filtering is important to avoid possible crosstalk. A second and more difficult problem to address is the interference caused by Raman noise, which increases with the fiber length and is also dependent on the input power of the classical channel. Thus, in this paper the focus is on the possibility of suppressing the Raman noise effect, both in advance by means of wavelength positioning and by means of installed optical components. Such phenomena must be considered in the route design, as the quantum channel must be placed at a suitable wavelength with respect to the classical channels. The influence of other nonlinear phenomena has been neglected. In this paper, a practical experiment aimed at building a fully functional multiplexed quantum key distribution link is also described.

Keywords

attenuation; Clavis3; coherent one-way protocol; quantum key distribution; wavelength-division multiplexing

Authors

KLÍČNÍK, O.; MÜNSTER, P.; HORVÁTH, T.

Released

16. 11. 2023

Publisher

MDPI

Location

BASEL, SWITZERLAND

ISBN

2304-6732

Periodical

Photonics

Year of study

10

Number

11

State

Swiss Confederation

Pages from

1

Pages to

14

Pages count

14

URL

https://www.mdpi.com/2304-6732/10/11/1265

Full text in the Digital Library

http://hdl.handle.net/11012/245124

BibTex

@article{BUT185324,
  author="Ondřej {Klíčník} and Petr {Münster} and Tomáš {Horváth}",
  title="Multiplexing Quantum and Classical Channels of a Quantum Key Distribution (QKD) System by Using the Attenuation Method",
  journal="Photonics",
  year="2023",
  volume="10",
  number="11",
  pages="1--14",
  doi="10.3390/photonics10111265",
  issn="2304-6732",
  url="https://www.mdpi.com/2304-6732/10/11/1265"
}