Programmable Assembly of Ground State Fermionic Tweezer Arrays

TL;DR

This paper presents a fast, scalable method for deterministic preparation and control of fermionic $^6$Li atom arrays in optical tweezers, enabling programmable quantum simulation with high fidelity and resolution.

Contribution

It introduces a novel approach for deterministic, high-fidelity preparation and control of fermionic atom arrays with parallelized site- and number-resolved capabilities.

Findings

Achieved motional ground-state fidelities above 98.5%.

Demonstrated high-fidelity spin-, site-, and density-resolved readout within 20 microseconds.

Established a scalable, programmable architecture for fermionic quantum simulation.

Abstract

We demonstrate deterministic preparation of arbitrary two-component product states of fermionic $^6$Li atoms in an 8$\times$8 optical tweezer array, achieving motional ground-state fidelities above $98.5\,\%$. Leveraging the large differential magnetic moments for spin-resolution, with parallelized site- and number-resolved control, our approach addresses key challenges for low-entropy quantum state engineering. Combined with high-fidelity spin-, site-, and density-resolved readout within a single $20\,\mathrm{\mu s}$ exposure, and $3\,\mathrm{s}$ experimental cycles, these advances establish a fast, scalable, and programmable architecture for fermionic quantum simulation.