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Hannover 2013 – scientific programme

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MO: Fachverband Molekülphysik

MO 16: Cold Molecules II

MO 16.2: Talk

Wednesday, March 20, 2013, 11:15–11:30, F 107

Double Bose-Einstein condensate of rubidium and strontium — •Alex Bayerle1,2, Slava Tzanova2, Benjamin Pasquiou2, Simon Stellmer2, Jacek Szczepkowski2,3, Mark Parigger2, Florian Vogl2, Rudolf Grimm1,2, and Florian Schreck21Institut für Experimentalphysik und Zentrum für Quantenphysik Universität Innsbruck, 6020 Innsbruck, Austria — 2Institut für Quantenoptik und Quanteninformation (IQOQI), Österreichische Akademie der Wissenschaften, 6020 Innsbruck, Austria — 3Institute of Physics, Polish Academy of Sciences, Warsaw, Poland

In this talk I will present the production of a Rb-Sr double Bose-Einstein condensate. Our unusual scheme to cool rubidium to quantum degeneracy relies as first step on sympathetic cooling of rubidium by narrow-line laser-cooled strontium. In a second step, only very little evaporation is needed to bring both atomic species to quantum degeneracy.

We intend to use this alkali/alkaline-earth mixture to produce ground-state RbSr molecules, which are polar open-shell molecules. Their electric dipole moment gives rise to anisotropic long-range interactions. In contrast to bi-alkali ground-state molecules, they possess an unpaired electron, which provides them with additional degrees of freedom. Their interaction properties can be tuned by electric as well as magnetic fields, which will allow us to study novel quantum chemistry and provides us with a platform for spin-lattice quantum simulations.

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