Hannover 2016 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 11: Poster: Quantum Optics and Photonics I

Q 11.21: Poster

Montag, 29. Februar 2016, 16:30–19:00, Empore Lichthof

News from the Garching NaK mixture — •Nikolaus Buchheim, Frauke Seeßelberg, Zhenkai Lu, Roman Bause, Tobias Schneider, Immanuel Bloch, and Christoph Gohle — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching

Ultracold quantum gases with long-range dipolar interactions promise exciting new possibilities for quantum simulation of strongly interacting many-body systems like fractional MOT insulators and supersolid phases. Our experimental apparatus is capable of creating ultracold sodium and potassium mixtures with high phase space density, weakly bound feshbach molecules and aims towards generating ultracold polar ²³Na⁴⁰K molecules in their vibrational, rotational and hyperfine ground state.

To this end, a stimulated Raman adiabatic passage (STIRAP) has to be implemented, which is a two photon process capable of transferring weakly bound Feshbach molecules via an intermediate, excited molecular state to the ground state with high efficiency. We employ a spin-orbit coupled intermediate state in the D/d molecular manifold of the NaK system. With our apparatus we are also capable to analyze the properties of a small number of Potassium atoms immersed into a degenerate Bose gas of Sodium atoms. This setting is known as the Bose polaron.