title: Long-distance decoy-state quantum key distribution in optical fiber.
abstract: The theoretical existence of photon-number-splitting attacks creates a security loophole for most quantum key distribution (QKD) demonstrations that use a highly attenuated laser source. Using ultralow-noise, high-efficiency transition-edge sensor photodetectors, we have implemented the first version of a decoy-state protocol that incorporates finite statistics without the use of Gaussian approximations in a one-way QKD system, enabling the creation of secure keys immune to photon-number-splitting attacks and highly resistant to Trojan horse attacks over 107 km of optical fiber.
authors.affiliation: Applied Modern Physics, MS D454, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
authors.forename: Danna
authors.initials: D
authors.lastname: Rosenberg
authors.forename: Jim W
authors.initials: JW
authors.lastname: Harrington
authors.forename: Patrick R
authors.initials: PR
authors.lastname: Rice
authors.forename: Philip A
authors.initials: PA
authors.lastname: Hiskett
authors.forename: Charles G
authors.initials: CG
authors.lastname: Peterson
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Hughes
authors.forename: Adriana E
authors.initials: AE
authors.lastname: Lita
authors.forename: Sae Woo
authors.initials: SW
authors.lastname: Nam
authors.forename: Jane E
authors.initials: JE
authors.lastname: Nordholt