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Q: Fachverband Quantenoptik und Photonik
Q 25: Poster: Quantum Optics and Photonics I
Q 25.26: Poster
Tuesday, March 12, 2019, 16:30–18:30, S Atrium Informatik
Production of quantum degenerate Bose-Fermi mixtures of 6Li and 133Cs — •Binh Tran1, Manuel Gerken1, Markus Neiczer1, Eleonora Lippi1, Lauritz Klaus1, Bing Zhu1,2, and Matthias Weidemüller1,2 — 1Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany — 2Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
The 6Li-133Cs system is particularly well-suited for studying impurity physics since it offers the largest mass ratio among stable alkali atoms. Besides the tunability of attractive and repulsive interactions, the Li-Cs Feshbach resonances allow for the preparation of stable Bose and Fermi polarons, where an impurity is dressed by the elementary excitations of a Bose-Einstein condensate or a Fermi sea, respectively. We describe the production of a 133Cs Bose-Einstein condensate by means of degenerate Raman sideband cooling and subsequent forced evaporative cooling. Furthermore, we describe the creation of a degenerate Fermi gas by performing gray-molasses cooling after which we load the sample into a flexible optical dipole trap involving a time-averaged optical potential. The latter offers good starting conditions for further evaporative cooling. Eventually, we discuss possibilites to cancel the gravitational sag and combine both species in order to study polaron physics or to create double degenerate mixtures.