Bonn 2025 – scientific programme

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A: Fachverband Atomphysik

A 11: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)

A 11.8: Poster

Tuesday, March 11, 2025, 14:00–16:00, Tent

A Dipolar Quantum Gas Microscope in UV Optical Lattices — •Fiona Hellstern, Kevin Ng, Paul Uerlings, Michael Wischert, Alexandra Köpf, Tanishi Verma, Stephan Welte, Ralf Klemt, and Tilman Pfau — 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology IQST, Universität Stuttgart

We present progress on our dipolar quantum gas microscope, enabling in situ, single-atom, and single-site resolved detection of Dysprosium atoms in 180 nm spaced UV optical lattices. Using 360 nm light, we can create various lattice geometries to explore strongly correlated quantum phases. Due to the small lattice spacing, nearest-neighbor dipolar interactions can reach 200 Hz at 10 nK, granting us access to phases where long-range dipolar interactions play a dominant role.

UV spectroscopy has been performed to characterize key transitions, including isotope-specific features and a King plot analysis, essential for precise lattice control and future measurements. We present our results on the characterization of our high-NA (0.9) in-vacuum objective, highlighting its ability to achieve 180 nm spatial super-resolution through the implementation of shelving techniques. Finally, we outline our plans to leverage these tools for exploring novel quantum phases, dipolar many-body physics, and emergent phenomena in strongly interacting systems.

Keywords: Dysprosium; Optical Lattice; Microscope; ultra-cold; BEC