Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 33: Quantum Gases
Q 33.4: Vortrag
Mittwoch, 16. März 2022, 14:45–15:00, Q-H10
Towards Bose polarons in an ultracold Fermi-Bose mixture of 6Li and 133Cs — •Tobias Krom1, Binh Tran1, Eleonora Lippi1, Michael Rautenberg1, Manuel Gerken1, Robert Freund1, Bing Zhu1,2, Tilman Enss3, Manfred Salmhofer3, Lauriane Chomaz1, and Matthias Weidemüller1 — 1Physikalisches Institut, Ruprecht Karl University of Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany — 2Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China — 3Institut for Theoretical Physics, Ruprecht Karl University of Heidelberg, Philosophenweg 19, 69120 Heidelberg, Germany
Experiments with a mixture of ultracold gases allow to probe the behavior of impurities in an environment. In our experiment we are working with the highest possible mass ratio between the impurity and the environment which can be achieved with stable alkali atoms. We are currently aiming for the creation a Bose polaron quasiparticle which describes a single Li impurity inside a Cs BEC. This scenario can be mapped to the Fröhlich polaron model in condensed matter physics.
We describe the trap arrangement and the cooling scheme which will allow us to reach a degenerate Fermi gas and a BEC within one setup. Finally, we will overlap the two ultracold gases while keeping them within their own dipole trap. Furthermore, we give an overview of the necessary characterization steps of our system and the approach towards the experimental observation of the Bose polaron.