Hannover 2016 – scientific programme

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A: Fachverband Atomphysik

A 28: Ultracold plasmas and Rydberg systems (with Q)

A 28.6: Poster

Wednesday, March 2, 2016, 16:30–19:00, Empore Lichthof

Stable optical lattices for creating and imaging ultracold quantum fluids of potassium — •Emil Pavlov, Stephan Helmrich, Alda Arias, Tobias Wintermantel, and Shannon Whitlock — Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg

Ultracold Rydberg atoms with their long-range interactions offer a controllable environment for realizing synthetic model systems to be studied, e.g. unconventional superfluids and extended Hubbard models. The strength and range of their interactions can be controlled via coherent coupling of the Rydberg states to the ground states (Rydberg dressing). In our experiment we plan to reveal the resulting quantum phases using a quantum gas microscope with single-site resolution. For this purpose we have designed a novel two-dimensional optical lattice induced by three-beam interference, which, when combined with a pancake-shaped trap, provides the necessary two-dimensional geometry. In order to minimize adverse heating effects on the atoms, the whole setup must exhibit high intensity, phase and pointing stability. We will present our evaluation of the lattice stability as well as initial experimental results.