Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 28: Ultra-cold Atoms, Ions and BEC II (joint session A/Q)
A 28.5: Talk
Thursday, March 14, 2024, 12:00–12:15, HS 1098
A quantum-gas microscope for ultracold strontium atoms — Sandra Buob1, Jonatan Höschele1, Vasiliy Makhalov1, •Antonio Rubio-Abadal1, and Leticia Tarruell1,2 — 1ICFO - 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