Mainz 2026 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 42: Poster – Ultracold Matter (joint session Q/A)

Q 42.12: Poster

Mittwoch, 4. März 2026, 17:00–19:00, Philo 2. OG

Theoretical analysis of the mitigation of Floquet heating with multi-tone drives in a Hubbard lattice — •Carlotta Koroll and •Francesco Petiziol — Technische Universität Berlin, Germany

Floquet engineering allows for the realization of effective Hamiltonians that are difficult to access in static systems. This is achieved by driving a highly controllable quantum system with a periodic signal. However, one limitation is the gradual absorption of drive energy over time, which drags the system towards a featureless state in the long run, a process known as Floquet heating. One technique for minimizing this effect is the design of driving schemes that effectively close energy absorption channels through destructive interference. This has recently been demonstrated in experiments with ultracold atoms in optical lattices using a two-tone drive. We present a theoretical and numerical study of this mechanism in a driven Hubbard lattice. Our goal is to develop a clearer understanding of the underlying heating processes and to determine under which conditions multi-tone driving can effectively mitigate Floquet heating in interacting lattice systems.

Keywords: Floquet Engineering; Quantum Simulation; Hubbard Model; Optical Lattice