Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 63: Poster Ultrakalte Moleküle
Q 63.6: Poster
Donnerstag, 22. März 2007, 16:30–18:30, Poster C
Creation of an ultracold heteronuclear mixture of fermionic lithium and potassium — •Andreas Trenkwalder1,2, Gabriel Kerner1, Devang Naik1, Eric Wille1,2, Frederik Spiegelhalder1, 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
Studies of ultracold heteronuclear mixtures of fermionic atoms in the BEC-BCS crossover regime will give new insights into many-body physics. Therefore, we have constructed a new experiment to investigate mixtures of the three fermionic species 6Li, 40K and 87Sr. We have already trapped various combinations of fermionic and bosonic isotopes in our multi-species MOT. We have loaded a 6Li-40K mixture into a crossed-beam optical dipole trap realized with a 100 W near-infrared fiber laser. Close to the 834 G Feshbach resonance of 6Li, we have performed evaporative cooling and recently achieved our first 6Li2 molecular BEC. Under the same conditions we observe efficient sympathetic cooling of 40K by 6Li. Currently we are investigating heteronuclear interactions. In this poster we present a brief overview of our experiment and our latest results.