Hamburg 2009 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 14: Ultra-Cold Atoms, Ions and BEC I (with Q)

A 14.2: Fachvortrag

Dienstag, 3. März 2009, 17:00–17:30, VMP 6 HS-C

Coherent collapse dynamics of dipolar Bose-Einstein condensates for different trap geometries — •Jonas Metz, Thierry Lahaye, Bernd Fröhlich, Ashok Mohapatra, Axel Griesmaier, and Tilman Pfau — 5. Physikalisches Institut, Universität Stuttgart

We present the collapse dynamics of dipolar chromium Bose-Einstein condensates in different harmonic trap geometries, from prolate, via almost spherical to oblate. The evolution of the condensates in the unstable regime are compared to three-dimensional simulations of the Gross-Pitaevskii equation including three-body losses. In order to probe the phase coherence of the collapsed condensates we interfere several copies and observe high fringe contrast.