Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics V
Q 62.10: Poster
Donnerstag, 8. März 2018, 16:15–18:15, Redoutensaal
Higher partial wave Feshbach resonances in an ultracold mixture of 6Li and 133Cs atoms — •Manuel Gerken1, Stephan Häfner1, Bing Zhu1, Binh Tran1, Juris Ulmanis1, Eberhard Tiemann2, and Matthias Weidemüller1,3 — 1Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany — 2Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany — 3Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
We present measurements and analysis of higher partial wave Feshbach resonances in an ultracold mixture of fermionic 6Li and bosonic 133Cs atoms. We observe five p-wave (l=1) and three d-wave (l=2) resonances in the two energetically lowest entrance channels by magnetic field dependent atom-loss spectroscopy. We observe doublet and triplet structures in the p-wave resonances corresponding to different ml, the projections of the pair rotation angular momentum. We attribute the lifted degeneracy in the ml states to spin-spin and spin-rotation coupling in the molecules. The observed d-wave Feshbach resonances allow us to refine the LiCs singlet and triplet molecular potential curves at large internuclear separations.