title: Efficient decoy-state quantum key distribution with quantified security.
abstract: We analyse the finite-size security of the efficient Bennett-Brassard 1984 protocol implemented with decoy states and apply the results to a gigahertz-clocked quantum key distribution system. Despite the enhanced security level, the obtained secure key rates are the highest reported so far at all fibre distances.
authors.forename: M
authors.initials: M
authors.lastname: Lucamarini
authors.forename: K A
authors.initials: KA
authors.lastname: Patel
authors.forename: J F
authors.initials: JF
authors.lastname: Dynes
authors.forename: B
authors.initials: B
authors.lastname: Fröhlich
authors.forename: A W
authors.initials: AW
authors.lastname: Sharpe
authors.forename: A R
authors.initials: AR
authors.lastname: Dixon
authors.forename: Z L
authors.initials: ZL
authors.lastname: Yuan
authors.forename: R V
authors.initials: RV
authors.lastname: Penty
authors.forename: A J
authors.initials: AJ
authors.lastname: Shields