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

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dc.contributor.authorKlíčník, Ondřejcs
dc.contributor.authorMünster, Petrcs
dc.contributor.authorHorváth, Tomášcs
dc.coverage.issue11cs
dc.coverage.volume10cs
dc.date.issued2023-11-16cs
dc.description.abstractThe 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.en
dc.formattextcs
dc.format.extent1-14cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationPhotonics. 2023, vol. 10, issue 11, p. 1-14.en
dc.identifier.doi10.3390/photonics10111265cs
dc.identifier.issn2304-6732cs
dc.identifier.orcid0000-0001-5903-7877cs
dc.identifier.orcid0000-0002-4651-8353cs
dc.identifier.orcid0000-0001-8659-8645cs
dc.identifier.other185324cs
dc.identifier.urihttp://hdl.handle.net/11012/245124
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofPhotonicscs
dc.relation.urihttps://www.mdpi.com/2304-6732/10/11/1265cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2304-6732/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectattenuationen
dc.subjectClavis3en
dc.subjectcoherent one-way protocolen
dc.subjectquantum key distributionen
dc.subjectwavelength-division multiplexingen
dc.titleMultiplexing Quantum and Classical Channels of a Quantum Key Distribution (QKD) System by Using the Attenuation Methoden
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-185324en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:42:36en
sync.item.modts2025.01.17 16:33:33en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav telekomunikacícs
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