Hannover 2020 – scientific programme
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A: Fachverband Atomphysik
A 28: Poster Session - Atomic Physics IV
A 28.4: Poster
Thursday, March 12, 2020, 16:00–18:00, Empore Lichthof
Cloud shape of a molecular Bose-Einstein condensate in a disordered trap — •Sian Barbosa1, Benjamin Nagler1,2, Milan Radonjic1,3, Jennifer Koch1, Axel Pelster1, and Artur Widera1,2 — 1Department of Physics and Research Center OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany — 2Graduate School Materials Science in Mainz, Gottlieb-Daimler-Straße 47, 67663 Kaiserslautern, Germany — 3Scientific Computing Laboratory, Center for the Study of Complex Systems, Institute of Physics Belgrade, University of Belgrade, Serbia
The use of random potentials in experiments with ultracold atoms has proven to be a powerful tool to study disordered quantum systems. Here, we present our investigation of the static geometric properties of a harmonically trapped Bose-Einstein condensate of lithium-6 molecules in an optical speckle potential. We measure the in-situ column density profiles and the corresponding transverse cloud widths over many speckle realizations. We compare the measured widths with a theory that is non-perturbative with respect to the disorder and includes quantum fluctuations. In addition, we present a novel method to calibrate the optical speckle potential.