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A: Fachverband Atomphysik
A 28: Poster Session - Atomic Physics IV
A 28.11: Poster
Thursday, March 12, 2020, 16:00–18:00, Empore Lichthof
Inter-orbital Interactions in a Fermionic Ytterbium Mixture — •Marcel Diem1, Benjamin Abeln1, Koen Sponselee1, Nejira Pintul1, Klaus Sengstock1,2, and Christoph Becker1,2 — 1Center for Optical Quantum Technologies, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg — 2Institute for Laserphysics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg
We present measurements on the inter-orbital interactions between 1S0 ground state and 3P0 metastable state atoms in different fermionic Ytterbium mixtures. We use clock transition spectroscopy in a three-dimensional optical lattice to determine the s-wave scattering lengths. Our first set of measurements is on the spin-exchange interaction of the fermionic Isotope 171Yb. The interaction is antiferromagnetic, which makes 171Yb a promising candidate for the quantum simulation of the Kondo lattice model. Our second set of measurements is on inter-orbital interactions in an SU(2) × SU(6) fermionic mixture of 171Yb and 173Yb. We measure the different interaction strengths and show its SU(N) symmetry.