title: Uniting Bose-Einstein condensates in optical resonators.
abstract: The relative phase of two initially independent Bose-Einstein condensates can be laser cooled to unite the two condensates by putting them into a ring cavity and coupling them with an internal Josephson junction. First, we show that this phase cooling process already appears within a semiclassical model. We calculate the stationary states, find regions of bistable behavior, and suggest a Ramsey-type experiment to measure the buildup of phase coherence between the condensates. We also study quantum effects and imperfections of the system.
authors.affiliation: Institut für Theoretische Physik, Universität Innsbruck, A-6020 Innsbruck, Austria.
authors.forename: D
authors.initials: D
authors.lastname: Jaksch
authors.forename: S A
authors.initials: SA
authors.lastname: Gardiner
authors.forename: K
authors.initials: K
authors.lastname: Schulze
authors.forename: J I
authors.initials: JI
authors.lastname: Cirac
authors.forename: P
authors.initials: P
authors.lastname: Zoller