Tools for the Security Analysis of Quantum Key Distribution in Infinite Dimensions

dc.contributor.advisorLütkenhaus, Norbert
dc.contributor.authorUpadhyaya, Twesh
dc.date.accessioned2021-08-12T18:15:34Z
dc.date.available2021-12-11T05:50:11Z
dc.date.issued2021-08-12
dc.date.submitted2021-07-30
dc.description.abstractWe develop a method to connect the infinite-dimensional description of optical continuous-variable quantum key distribution (QKD) protocols to a finite-dimensional formulation. The secure key rates of the optical QKD protocols can then be evaluated using recently-developed reliable numerical methods for key rate calculations. We apply this method to obtain asymptotic key rates for discrete-modulated continuous-variable QKD protocols, which are of practical significance due to their experimental simplicity and potential for large-scale deployment in quantum-secured networks. Importantly, our security proof does not require the photon-number cutoff assumption relied upon in previous works. We also demonstrate that our method can provide practical advantages over the flag-state squasher when applied to discrete-variable protocols.en
dc.identifier.urihttp://hdl.handle.net/10012/17209
dc.language.isoenen
dc.pendingfalse
dc.publisherUniversity of Waterlooen
dc.subjectquantum informationen
dc.subjectquantum communicationen
dc.titleTools for the Security Analysis of Quantum Key Distribution in Infinite Dimensionsen
dc.typeMaster Thesisen
uws-etd.degreeMaster of Scienceen
uws-etd.degree.departmentPhysics and Astronomyen
uws-etd.degree.disciplinePhysics (Quantum Information)en
uws-etd.degree.grantorUniversity of Waterlooen
uws-etd.embargo.terms4 monthsen
uws.contributor.advisorLütkenhaus, Norbert
uws.contributor.affiliation1Faculty of Scienceen
uws.peerReviewStatusUnrevieweden
uws.published.cityWaterlooen
uws.published.countryCanadaen
uws.published.provinceOntarioen
uws.scholarLevelGraduateen
uws.typeOfResourceTexten

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