Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 2: Quantum Gases (Bosons) I

Q 2.1: Invited Talk

Monday, March 14, 2022, 14:00–14:30, Q-H10

Matter-wave microscope for sub-lattice-resolved imaging of 3D quantum systems — •Christof Weitenberg — Institut für Laserphysik, Luruper Chaussee 149, 22761 Hamburg

Imaging is central to gaining microscopic insight into physical systems, and new microscopy methods have always led to the discovery of new phenomena and a deeper understanding of them. Ultracold atoms in optical lattices provide a quantum simulation platform, featuring a variety of advanced detection tools including direct optical imaging while pinning the atoms in the lattice. However, this approach suffers from the diffraction limit, high optical density and small depth of focus, limiting it to two-dimensional (2D) systems.

In this talk, I will present our new imaging approach where matter-wave optics magnifies the density distribution before optical imaging, allowing 2D sub-lattice-spacing resolution in three-dimensional (3D) systems. The method opens the path for spatially resolved studies of new quantum many-body regimes and paves the way for single-atom-resolved imaging of atomic species, where efficient laser cooling or deep optical traps are not available, but which substantially enrich the toolbox of quantum simulation of many-body systems.