Erlangen 2022 – scientific programme

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A: Fachverband Atomphysik

A 31: Ultra-cold atoms, ions and BEC IV (joint session A/Q)

A 31.5: Talk

Friday, March 18, 2022, 11:45–12:00, A-H1

Quantum gas magnifier for sub-lattice-resolved imaging of 3D quantum systems — Luca Asteria, Henrik P. Zahn, •Marcel N. Kosch, Klaus Sengstock, and Christof Weitenberg — Universität Hamburg, Hamburg, Deutschland

Imaging is central for gaining microscopic insight into physical systems, but direct imaging of ultracold atoms in optical lattices as modern quantum simulation platform suffers from the diffraction limit as well as high optical density and small depth of focus. We introduce a novel approach to imaging of quantum many-body systems using matter wave optics to magnify the density distribution prior to optical imaging, allowing sub-lattice spacing resolution in three-dimensional systems. Combining the site-resolved imaging with magnetic resonance techniques for local addressing of individual lattice sites, we demonstrate full accessibility to local information and local manipulation in three-dimensional optical lattice systems. The method opens the path for spatially resolved studies of new quantum many-body regimes including exotic lattice geometries.