title: Quantum cryptography without switching.
abstract: We propose a new coherent state quantum key distribution protocol that eliminates the need to randomly switch between measurement bases. This protocol provides significantly higher secret key rates with increased bandwidths than previous schemes that only make single quadrature measurements. It also offers the further advantage of simplicity compared to all previous protocols which, to date, have relied on switching.
authors.affiliation: Quantum Optics Group, Department of Physics, Faculty of Science, Australian National University, ACT 0200, Australia.
authors.forename: Christian
authors.initials: C
authors.lastname: Weedbrook
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Lance
authors.forename: Warwick P
authors.initials: WP
authors.lastname: Bowen
authors.forename: Thomas
authors.initials: T
authors.lastname: Symul
authors.forename: Timothy C
authors.initials: TC
authors.lastname: Ralph
authors.forename: Ping Koy
authors.initials: PK
authors.lastname: Lam