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dc.contributor.authorGrasselli, Federico
dc.contributor.authorNavarrete Rodriguez, Alvaro
dc.contributor.authorCurty Alonso, Marcos 
dc.date.accessioned2021-05-13T11:58:08Z
dc.date.available2021-05-13T11:58:08Z
dc.date.issued2019-11-14
dc.identifier.citationNew Journal of Physics, 21(11): 113032 (2019)spa
dc.identifier.issn13672630
dc.identifier.urihttp://hdl.handle.net/11093/2146
dc.description.abstractTwin-Field (TF) quantum key distribution (QKD) is a major candidate to be the new benchmark for far-distance QKD implementations, since its secret key rate can overcome the repeaterless bound by means of a simple interferometric measurement. Many variants of the original protocol have been recently proven to be secure. Here, we focus on the TF-QKD type protocol proposed by Curty et al (2019 NPJ Quantum Inf. 5 64), which can provide a high secret key rate and whose practical feasibility has been demonstrated in various recent experiments. The security of this protocol relies on the estimation of certain detection probabilities (yields) through the decoy-state technique. Analytical bounds on the relevant yields have been recently derived assuming that both parties use the same set of decoy intensities, thus providing sub-optimal key rates in asymmetric-loss scenarios. Here we derive new analytical bounds when the parties use either two, three or four independent decoy intensity settings each. With the new bounds we optimize the protocol's performance in asymmetric-loss scenarios and show that the protocol is robust against uncorrelated intensity fluctuations affecting the parties' lasers.en
dc.description.sponsorshipMinisterio de Economía, Industria y Competitividad (España) | Ref. TEC2017-88243-Rspa
dc.description.sponsorshipEuropean Commissionspa
dc.language.isoengen
dc.publisherNew Journal of Physicsspa
dc.relationinfor:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/TEC2017-88243-R/ES/SEGURIDAD DE LAS IMPLEMENTACIONES DE SISTEMAS CUANTICOS DE DISTRIBUCION DE CLAVE CON SUPOSICIONES LAXAS
dc.rightsAttribution 3.0 Unported (CC BY 3.0)
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.titleAsymmetric twin-field quantum key distributionen
dc.typearticlespa
dc.rights.accessRightsopenAccessspa
dc.relation.projectIDinfo:eu-repo/grantAgreement/EU/H2020/675662spa
dc.identifier.doi10.1088/1367-2630/ab520e
dc.identifier.editorhttps://iopscience.iop.org/article/10.1088/1367-2630/ab520espa
dc.publisher.departamentoTeoría do sinal e comunicaciónsspa
dc.publisher.grupoinvestigacionAntenas, Radar e Comunicacións Ópticasspa
dc.subject.unesco12 Matemáticasspa
dc.subject.unesco22 Físicaspa
dc.subject.unesco2210.23 Teoría Cuánticaspa
dc.subject.unesco3325 Tecnología de las Telecomunicacionesspa
dc.date.updated2021-05-13T10:33:19Z
dc.computerCitationpub_title=New Journal of Physics|volume=21|journal_number=11|start_pag=113032|end_pag=spa
dc.referencesThis work was supported by the Spanish Ministry of Economy and Competitiveness (MINECO), the Fondo Europeo de Desarrollo Regional (FEDER) through grant TEC2017-88243-R, and the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 675662. AN gratefully acknowledges support from a FPU scholarship from the Spanish Ministry of Education.spa


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