SAMOP 2023 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 9: Quantum Gases: Bosons I
Q 9.6: Talk
Monday, March 6, 2023, 18:30–18:45, A320
Quantum Gas Microscopy of Cesium Atoms in Optical Superlattices — •Julian Wienand1,2,3, Alexander Impertro1,2,3, Simon Karch1,2,3, Hendrik von Raven1,2,3, Scott Hubele1,2,3, Sophie Häfele1,2,3, Ignacio Pérez1,2,3, Immanuel Bloch1,2,3, and Monika Aidelsburger1,2 — 1Department of Physics, Ludwig-Maximilians-Universität München, Schellingstr. 4, D-80799 Munich, Germany — 2Munich Center for Quantum Science and Technology (MCQST), Schellingstr. 4, D-80333 Munich, Germany — 3Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany
Ultracold cesium atoms provide a promising experimental platform for quantum simulation of interacting quantum many-body phases. This is due to a convenient control of the scattering length via a broad low-field Feshbach resonance and the possibility to engineer state-dependent lattices with minimal heating. In this talk we present recent progress on our cesium quantum gas microscope, where we have implemented 2d optical superlattices, a digital mirror device (DMD) for potential shaping, and an active magnetic field stabilization. This paves the way for quantum simulation of a large variety of different Hamiltonians ranging from tunable spin models to topological lattices. In order to enhance the nearest-neighbor tunnel coupling, we work with rather short-spaced optical lattices prohibiting the direct resolution of neighboring lattice sites. To overcome this challenge we have developed a novel deep-learning assisted single-site reconstruction algorithm, which provides access to local observables.