A two-dimensional programmable tweezer array of fermions

TL;DR

This paper demonstrates the creation and control of a two-dimensional array of fermionic atoms in optical tweezers, enabling programmable quantum simulation with high precision and low entropy states.

Contribution

It introduces a method to prepare and manipulate large fermionic atom arrays with configurable geometries for quantum simulation.

Findings

Successfully prepared high-filling fermionic arrays in various geometries.

Achieved full spin- and density-resolved readout of individual sites.

Demonstrated a correlated state in a Hubbard plaquette.

Abstract

We prepare high-filling two-component arrays of up to fifty fermionic atoms in optical tweezers, with the atoms in the ground motional state of each tweezer. Using a stroboscopic technique, we configure the arrays in various two-dimensional geometries with negligible Floquet heating. Full spin- and density-resolved readout of individual sites allows us to post-select near-zero entropy initial states for fermionic quantum simulation. We prepare a correlated state in a two-by-two tunnel-coupled Hubbard plaquette, demonstrating all the building blocks for realizing a programmable fermionic quantum simulator.