Controlling excess noise in fiber optics continuous variables quantum key distribution

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dc.creatorLodewyck, Jérôme
dc.creatorDebuisschert, Thierry
dc.creatorTualle-Brouri, Rosa
dc.creatorGrangier, Philippe
dc.date2005-11-10
dc.date2005-12-01
dc.date.accessioned2026-07-07T06:52:43Z
dc.date.available2026-07-07T06:52:43Z
dc.descriptionWe describe a continuous variables coherent states quantum key distribution system working at 1550 nm, and entirely made of standard fiber optics and telecom components, such as integrated-optics modulators, couplers and fast InGaAs photodiodes. The setup is composed of an emitter randomly modulating a coherent state in the complex plane with a doubly Gaussian distribution, and a receiver based on a shot noise limited time-resolved homodyne detector. By using a reverse reconciliation protocol, the device can transfer a raw key rate up to 1 Mb/s, with a proven security against Gaussian or non-Gaussian attacks. The dependence of the secret information rate of the present fiber set-up is studied as a function of the line transmission and excess noise.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0511104
dc.identifierhttp://arxiv.org/abs/quant-ph/0511104
dc.identifierPRA, 72, 050303(R) (2005)
dc.identifierdoi:10.1103/PhysRevA.72.050303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/105391
dc.subjectQuantum Physics
dc.titleControlling excess noise in fiber optics continuous variables quantum key distribution
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