title: Unconditional security proof of long-distance continuous-variable quantum key distribution with discrete modulation.
abstract: We present a continuous-variable quantum key distribution protocol combining a discrete modulation and reverse reconciliation. This protocol is proven unconditionally secure and allows the distribution of secret keys over long distances, thanks to a reverse reconciliation scheme efficient at very low signal-to-noise ratio.
authors.affiliation: Institut Telecom/Telecom ParisTech, CNRS LTCI, 46, rue Barrault, 75634 Paris Cedex 13, France.
authors.forename: Anthony
authors.initials: A
authors.lastname: Leverrier
authors.forename: Philippe
authors.initials: P
authors.lastname: Grangier