Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 12: Ultra-cold atoms, ions and BEC (with A)
Q 12.40: Poster
Montag, 29. Februar 2016, 16:30–19:00, Empore Lichthof
Fermi-Fermi Mixtures of Dysprosium and Potassium — Cornee Ravensbergen2, Slava Tzanova1, Vincent Corre2, •Marian Kreyer1, Alexander Werlberger1, and Rudolf Grimm1,2 — 1Intitut für Experimentalphysik, Universität Innsbruck, Austria — 2Institut für Quantenoptik und Quanteninformation IQOQI, Innsbruck, Austria
Ultracold Fermi-Fermi mixtures with tunable interactions represent an intriguing test bed for exploring the physics of strongly interacting many-body quantum systems and few-body quantum states. Two-species Fermi gases extend the variety of phenomena thanks to mass imbalance. Mixtures of a fermionic isotope of dysprosium (161Dy or 163Dy) and the fermionic 40K provide a mass ratio of about four, which is big enough to experience strong asymmetries while avoiding losses from Efimov states. Furthermore, the large magnetic moment of dysprosium offers an additional feature to study anisotropic effects. In our experimental setup, we have implemented a Zeeman slower for dysprosium and a 2D magneto-optical trap (2D-MOT) for potassium to load a two-species MOT in the main vacuum chamber. It is planned to load both clouds into a dipole trap for evaporative cooling to achieve degeneracy of both species.