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Article: Feasibility of quantum key distribution through a dense wavelength division multiplexing network

TitleFeasibility of quantum key distribution through a dense wavelength division multiplexing network
Authors
Issue Date2010
Citation
New Journal of Physics, 2010, v. 12, article no. 103042 How to Cite?
AbstractIn this paper, we study the feasibility of conducting quantum key distribution (QKD) together with classical communication through the same optical fiber by employing dense-wavelength-division-multiplexing (DWDM) technology at telecom wavelength. The impact of classical channels on the quantum channel has been investigated for both QKD based on single-photon detection and QKD based on homodyne detection. Our studies show that the latter can tolerate a much higher level of contamination from classical channels than the former. This is because the local oscillator used in the homodyne detector acts as a 'mode selector', which can suppress noise photons effectively. We have performed simulations based on both the decoy BB84 QKD protocol and the Gaussian-modulated coherent state (GMCS) QKD protocol. While the former cannot tolerate even one classical channel (with a power of 0 dBm), the latter can be multiplexed with 38 classical channels (0 dBm power per channel) and still has a secure distance around 10 km. A preliminary experiment has been conducted based on a 100MHz bandwidth homodyne detector. © IOP Publishing Ltd. and Deutsche Physikalische Gesellschaft.
Persistent Identifierhttp://hdl.handle.net/10722/285526
ISSN
2020 Impact Factor: 3.729
2020 SCImago Journal Rankings: 1.584
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorQi, Bing-
dc.contributor.authorZhu, Wen-
dc.contributor.authorQian, Li-
dc.contributor.authorLo, Hoi Kwong-
dc.date.accessioned2020-08-18T04:55:58Z-
dc.date.available2020-08-18T04:55:58Z-
dc.date.issued2010-
dc.identifier.citationNew Journal of Physics, 2010, v. 12, article no. 103042-
dc.identifier.issn1367-2630-
dc.identifier.urihttp://hdl.handle.net/10722/285526-
dc.description.abstractIn this paper, we study the feasibility of conducting quantum key distribution (QKD) together with classical communication through the same optical fiber by employing dense-wavelength-division-multiplexing (DWDM) technology at telecom wavelength. The impact of classical channels on the quantum channel has been investigated for both QKD based on single-photon detection and QKD based on homodyne detection. Our studies show that the latter can tolerate a much higher level of contamination from classical channels than the former. This is because the local oscillator used in the homodyne detector acts as a 'mode selector', which can suppress noise photons effectively. We have performed simulations based on both the decoy BB84 QKD protocol and the Gaussian-modulated coherent state (GMCS) QKD protocol. While the former cannot tolerate even one classical channel (with a power of 0 dBm), the latter can be multiplexed with 38 classical channels (0 dBm power per channel) and still has a secure distance around 10 km. A preliminary experiment has been conducted based on a 100MHz bandwidth homodyne detector. © IOP Publishing Ltd. and Deutsche Physikalische Gesellschaft.-
dc.languageeng-
dc.relation.ispartofNew Journal of Physics-
dc.titleFeasibility of quantum key distribution through a dense wavelength division multiplexing network-
dc.typeArticle-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1088/1367-2630/12/10/103042-
dc.identifier.scopuseid_2-s2.0-78149454063-
dc.identifier.volume12-
dc.identifier.spagearticle no. 103042-
dc.identifier.epagearticle no. 103042-
dc.identifier.isiWOS:000284770000001-
dc.identifier.issnl1367-2630-

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