Coherent collapses of dipolar Bose-Einstein condensates for different trap geometries

We experimentally investigate the collapse dynamics of dipolar Bose-Einstein condensates of chromium atoms in different harmonic trap geometries, from prolate to oblate. The evolutions of the condensates in the unstable regime are compared with three-dimensional simulations of the Gross-Pitaevskii equation including three-body losses. In order to probe the phase coherence of collapsed condensates, we induce the collapse in several condensates simultaneously and let them interfere.