Secure Coherent-state Quantum Key Distribution Protocols with Efficient Reconciliation

Simple item page
dc.creatorVan Assche, G.
dc.creatorIblisdir, S.
dc.creatorCerf, N. J.
dc.date2004-10-05
dc.date.accessioned2026-07-07T06:22:46Z
dc.date.available2026-07-07T06:22:46Z
dc.descriptionWe study the equivalence between a realistic quantum key distribution protocol using coherent states and homodyne detection and a formal entanglement purification protocol. Maximally-entangled qubit pairs that one can extract in the formal protocol correspond to secret key bits in the realistic protocol. More specifically, we define a qubit encoding scheme that allows the formal protocol to produce more than one entangled qubit pair per coherent state, or equivalently for the realistic protocol, more than one secret key bit. The entanglement parameters are estimated using quantum tomography. We analyze the properties of the encoding scheme and investigate its application to the important case of the attenuation channel.
dc.descriptionREVTeX, 11 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0410031
dc.identifierhttp://arxiv.org/abs/quant-ph/0410031
dc.identifierPhys. Rev. A 71, p. 052304 (2005)
dc.identifierdoi:10.1103/PhysRevA.71.052304
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96007
dc.subjectQuantum Physics
dc.titleSecure Coherent-state Quantum Key Distribution Protocols with Efficient Reconciliation
dc.typetext

Files

Collections

arXiv