Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 33: Quantum Gases
Q 33.2: Talk
Wednesday, March 16, 2022, 14:15–14:30, Q-H10
Quantum gas microscopy of ultracold cesium atoms — •Alexander Impertro1,2,3, Julian Wienand1,2,3, Sophie Häfele1,2,3, Till Klostermann1,2,3, Hendrik von Raven1,2,3, Scott Hubele1,2,3, Cesar Cabrera1,2,3, Immanuel Bloch1,2,3, and Monika Aidelsburger1,2 — 1Ludwig-Maximilians-Universität, Schellingstraße 4, 80799 München, Germany — 2Munich Center for Quantum Science and Technology, Schellingstraße 4, 80799 München, Germany — 3MPI für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany
Ultracold cesium atoms provide a promising experimental platform for quantum simulation of topological many-body phases in the presence of interactions. This is due to a convenient control of the scattering length via a low-lying Feshbach resonance and the possibility to engineer state-dependent lattices. Additionally, high-resolution imaging techniques allow the probing of novel experimental observables at the single-atom and single-site level. In this new quantum gas microscope, we prepare a 2D sample of ultracold cesium atoms in optical lattices and probe them using fluorescence imaging. As a first step towards studying topological quantum phases, we demonstrate the preparation of a bosonic Mott-insulating state. Additionally, we present how we employ machine learning techniques to reconstruct the site-resolved lattice occupation despite a lattice spacing that is more than a factor of two smaller than the imaging resolution.