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A: Fachverband Atomphysik
A 28: Poster Session - Atomic Physics IV
A 28.16: Poster
Donnerstag, 12. März 2020, 16:00–18:00, Empore Lichthof
Interorbital spin-exchange dynamics in ultracold ytterbium — •Giulio Pasqualetti1,2,3, Oscar Bettermann1,2,3, Nelson Darkwah Oppong1,2,3, Luis Riegger1,2,3, Immanuel Bloch1,2,3, and Simon Fölling1,2,3 — 1Max-Planck-Institut für Quantenoptik, Garching, Germany — 2Ludwig-Maximilians-Universität, Munich, Germany — 3Munich Center for Quantum Science and Technology, Munich, Germany
With an ultranarrow clock transition, ultracold ytterbium is a promising candidate for quantum simulation of impurity physics, where atoms in a "clock" state represent the impurities, and atoms in the ground state play the role of conduction electrons. The interorbital spin-exchange interaction of ytterbium-171 has recently been measured and proved to be antiferromagnetic, complementing the already known ferromagnetic value of ytterbium-173. Such an interaction is very similar to the one responsible in condensed matter for the Kondo effect, where spin-spin interaction dominates the interplay between localized magnetic moments and the conduction bath. In our experiment, we utilize state-dependent lattices to localize dilute "clock" impurities, and we investigate spin-exchange dynamics of ytterbium in a variety of regimes. Our work presents some milestones towards the quantum simulation of strongly-correlated many-body electronic systems and, in particular, Kondo physics with ultracold atoms.