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Uniting Bose-Einstein condensates in optical resonators

D. Jaksch·S. A. Gardiner·K. Schulze·J. I. Cirac·P. Zoller
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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 build up of phase coherence between the condensates. We also study quantum effects and imperfections of the system.

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D. Jaksch, S. A. Gardiner, K. Schulze, J. I. Cirac, P. Zoller. 2001-03-30. Uniting Bose-Einstein condensates in optical resonators. https://doi.org/10.1103/physrevlett.86.4733

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