Uniting Bose-Einstein condensates in optical resonators.
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.
Jaksch
D
D
Institut für Theoretische Physik, Universität Innsbruck, A-6020 Innsbruck, Austria.
Gardiner
S A
SA
Schulze
K
K
Cirac
J I
JI
Zoller
P
P