IQP Seminar: Quantum gas microscopy of frustrated Hubbard systems

by Peter Schauss (IQP)

Wednesday 11 Dec 2024, 13:30 → 15:00 Europe/Berlin

ZOQ

Abstract: 

Frustrated quantum systems can host quasi-particles with fractional statistics and pose significant challenges to condensed matter theory due to their extensive ground state degeneracy. Here, we realized quantum simulation of electronic systems on a geometrically frustrated lattice using ultracold atoms in a quantum gas microscope.

In this talk, I will present the site-resolved imaging of fermionic Mott insulators of lithium atoms in a triangular optical lattice geometry and the measurement of spin-spin correlations. I will report on characterizing fermionic Mott insulators on a triangular lattice using site-resolved density and spin correlation observables and discuss comparisons of experimental data to Numerical Linked Cluster Expansion calculations as well as Quantum Monte Carlo simulations.

We recently implemented spin-resolved imaging and single-site addressing in our microscope and I will discuss our plans employing these tools for future studies. Our experimental platform opens the path for studies of chiral correlations in triangular Hubbard systems, searches for spin-liquids and investigations of transport properties in frustrated lattices.

We acknowledge funding by NSF (CAREER award PHY-2047275), ONR (DURIP award N00014-22-1-2681), AFOSR (award FA9550-23-1-0166), the Thomas F. and Kate Miller Jeffress Memorial Trust and the Jefferson Trust.

 

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Upcoming IQP events:

 

Jan 15, Michael Buchhold (U Köln)

Jan 22, Kyung Choi (Q-Block)