Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 4: Quantum gases (Fermions) I

Q 4.1: Talk

Monday, March 9, 2020, 11:00–11:15, e214

Simulationg the Mott insulator using attractive interaction — •Chun Fai Chan, Marcell Gall, Nicola Wurz, Jens Samland, and Michael Köhl — Physikalisches Institut, University of Bonn, Bonn, Germany

We investigate the particle-hole symmetry of the two-dimensional Hubbard model under a particle-hole transformation using ultracold fermionic potassium-40 confined in optical lattices. By experimentally probing the density and spin sectors of the Hubbard models with both repulsive and attractive interactions, we demonstrate a direct mapping between relevant observables. In addition, we observe a Mott-like, spin-incompressible phase in our realization of the spin-imbalanced attractive Hubbard model. Our results present a novel approach to quantum simulation by giving access to strongly-correlated phases of matter through an experimental mapping to easier detectable observables.