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SUMMARY:Bottom-up assembly of hot and cold Hubbard models using dynamic tweezer arrays
DESCRIPTION:Ultracold atoms are a powerful platform for performing quantum simulation of many-body models used to describe condensed-matter systems.  Two leading approaches for doing so include neutral atoms in optical lattices and programmable tweezer arrays of single atoms. The former yields nearly ideal realizations of a single-band Hubbard models (and more) by loading an evaporatively-cooled degenerate gas into an optical lattice potential. The latter, on the other hand, typically enables studies of quantum magnetism among atoms pinned in optical tweezers and interacting via long-range Rydberg interactions, which also leverages arbitrary control of the tweezer positions, rearrangement for defect-free preparation, and fast laser-cooling for accelerated statistics acquisition. It has been a question whether tweezer-based control might be extended to the studies of Hubbard models, realizing a bottom-up, rapid, and versatile approach to the assembly of interacting, itinerant quantum matter. In this talk, I will describe our approach to this question, focusing on two experiments: 1) high-fidelity preparation of a non-interacting hopping model of bosons and their dynamics, 2) realization of an interacting superfluid starting from individually laser-cooled atoms.  
LOCATION: Erwin Schrödinger Saal, Innsbruck
DTSTART:20251217T130000
DTEND:20251217T140000
TZID: Europe/Vienna
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