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Freiburg 2024 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 41: Ultra-cold Atoms, Ions and BEC II (joint session A/Q)

Q 41.5: Talk

Thursday, March 14, 2024, 12:00–12:15, HS 1098

A quantum-gas microscope for ultracold strontium atomsSandra Buob1, Jonatan Höschele1, Vasiliy Makhalov1, •Antonio Rubio-Abadal1, and Leticia Tarruell1,21ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain — 2ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain

Quantum-gas microscopes offer novel observables to study quantum many-body systems, but have so far been mostly restricted to alkali atoms. Alkaline-earth species, like strontium, offer a range of desirable features, due to their electronic structure, which can significantly expand the toolbox of Hubbard-type quantum simulation.

In this talk, I will present the realization of site-resolved imaging of a quantum gas of bosonic strontium in a clock-magic optical lattice. We realize fluorescence imaging via the blue 461-nm transition and simultaneous attractive Sisyphus cooling via the narrow 689-nm intercombination line. From the raw fluorescence images, we are able to reconstruct the atomic occupation with fidelities above 95%. Our experiment opens the door to future microscopic studies of the dissipative Bose-Hubbard model, as well as SU(N) fermions.

Keywords: strontium; quantum-gas microscope; optical lattices; Bose-Hubbard; ultracold atoms

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