title: Four-photon interferometry for secure quantum key distribution.
abstract: We introduce a quantum key distribution scheme based on four-photon coincidence measurements. This scheme offers a much higher degree of security than current quantum key distribution methods and minimizes problems due to photon losses and dark counts.
authors.forename: P
authors.initials: P
authors.lastname: Hariharan
authors.forename: Barry
authors.initials: B
authors.lastname: Sanders