Mainz 2026 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 21: Quantum Computing and Simulation III

Q 21.2: Vortrag

Dienstag, 3. März 2026, 11:30–11:45, P 10

Gate-based preparation of correlated states in a Fermi-Hubbard simulator — •Lars Fischer, Yann Kiefer, Zijie Zhu, Samuel Jele, Marius Gächter, Giacomo Bisson, Konrad Viebahn, and Tilman Esslinger — Institute for Quantum Electronics & Quantum Center, ETH Zürich, Otto-Stern-Weg 1, 8093 Zürich

Precise control over the degrees of freedom in a quantum system is essential for quantum simulation and computation, including both digital and analog approaches. Neutral atoms in optical lattices provide a platform that combines continuous Hamiltonian evolution (analog) together with high-fidelity quantum gates (digital). Building on previous experiments of topological pumping for programmable quantum processing in optical lattices, we leverage this modular architecture to engineer desirable quantum many body states. In this framework the topological pump, with quantized atomic transport, leads to atomic collisions that provide tunable two-qubit partial SWAP gates. We demonstrate how this infrastructure enables the creation and readout of non-local correlations using configurable quantum circuits. Our platform provides an approach for preparing and characterizing complex correlated states, opening new possibilities for quantum simulation of strongly correlated systems.

Keywords: Quantum Computing; Collisional Quantum Gates; Ultracold atoms; Topological Transport; Particle Entanglement