Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 72: Ultrakalte Moleküle II (gemeinsam mit MO)
Q 72.4: Vortrag
Freitag, 23. März 2007, 15:00–15:15, 6J
Experiments with an ultracold 6Li-40K Fermi-Fermi mixture — •Eric Wille1,2, Frederik Spiegelhalder1, Gabriel Kerner1, Devang Naik1, Andreas Trenkwalder1,2, Clarice Aiello1,2, Raquel Chulia-Jordan1, Gerhard Hendl1, Florian Schreck1, and Rudolf Grimm1,2 — 1Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Innsbruck, Austria — 2Institut für Experimentalphysik, Innsbruck, Austria
Degenerate mixtures of the two fermionic species 6Li and 40K provide a new, intriguing many-body quantum system, which allows to study strongly interacting Fermi gases consisting of atoms with unequal masses. We have recently created our first molecular 6Li2 BEC in a newly build machine. The 6Li atoms were loaded into a crossed-beam optical dipole trap realized with a 100 W near-infrared fiber laser. The sample was cooled evaporatively by lowering the laser power by three orders of magnitude within 5 s, leading to quantum degeneracy of 6Li2. To study heteronuclear mixtures, we have simultaneously trapped 40K and 6Li. We have sympathetically cooled 40K with 6Li during the evaporation process in the dipole trap. We will present our first investigations on heteronuclear interactions.
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