Bonn 2025 – scientific programme
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QI: Fachverband Quanteninformation
QI 30: Quantum Computing and Simulation I (joint session Q/QI)
QI 30.5: Talk
Thursday, March 13, 2025, 12:00–12:15, AP-HS
Programmable Fermionic Quantum Simulation with Ground-State Optical Tweezer Arrays — •Jin Zhang1, Naman Jain1, Marcus Culemann1,2, Kirill Khoruzhii1,2, Jun Ong1, Xinyi Huang1, Pragya Sharma1, and Philipp Preiss1,3 — 1Max Planck Institute of Quantum Optics, Garching — 2Ludwig-Maximilians-Universität, Munich — 3Munich Center for Quantum Science and Technology
Programmable quantum simulation using ultracold fermions in optical lattices has emerged as a powerful approach to investigating many-body phenomena and non-equilibrium dynamics. Nonetheless, the initialization of arbitrary quantum states remains a significant challenge. Recent advances in optical tweezer arrays offer a promising solution for creating programmable initial states. Leveraging the reconfigurability of tweezers, atoms can be arranged into arbitrary spatial configurations. When combined with optical lattices and site- and spin-resolved imaging techniques, this setup establishes an ideal platform for quantum information studies. In this presentation, we demonstrate the rapid and high-fidelity preparation of optical tweezer arrays, achieving deterministic trapping of fermionic atom pairs in the motional ground state of each tweezer. We showcase spin-dependent free-space imaging, efficient loading and evaporation protocols, as well as deterministic control of atom numbers within the tweezer arrays. These advancements expand the scope of quantum simulation beyond ground-state Hubbard physics, enabling exploration of quantum chemistry and fermionic quantum information processing.
Keywords: Quantum Simulation; Optical Tweezer; Ultracold Fermions; Quantum Gas Microscope; Optical Lattice