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Q: Fachverband Quantenoptik und Photonik
Q 1: Ultracold Matter I – Fermions (joint session Q/A)
Q 1.4: Vortrag
Montag, 2. März 2026, 12:30–12:45, P 2
Programmable Assembly of Ground State Fermionic Tweezer Arrays — •Marcus Culemann1, Francesco Testi1, Jin Zhang1, Naman Jain1, and Philipp Preiss1,2 — 1Max-Planck Institute of Quantum Optics, Garching, Germany — 2Munich Center for Quantum Science and Technology, Munich, Germany
Quantum simulation with ultracold fermions in optical lattices provides unique insights into the microscopic details of strongly interacting quantum many-body systems. For non-equilibrium experiments, the choice of the initial atomic configuration is usually limited to a small set of accessible states such as Mott-insulators or charge density waves. Arrays of optical tweezers offer a capable extension to this toolbox by using their dynamic reconfigurability to assemble quantum systems in an optical lattice atom-by-atom.
We demonstrate the preparation of arbitrary spin- and density-resolved product states of single atoms within an 8x8 optical tweezer array. Specifically, we showcase preparation of anti-ferromagnets with engineered defects like domain-walls in the tweezer array and report on recent progress on the state assembly in the lattice. Combined with fast single-exposure spin- and site-resolved imaging, these advancements enable new directions in out-of-equilibrium physics within the Fermi-Hubbard model as well as fermionic quantum information processing.
Keywords: Quantum Simulation; Optical Tweezers; Ultracold Fermions; Quantum Gas Microscope; Optical Lattice