K hexagonal lattice

We are developing novel experimental techniques to study genuine out-of-equilibrium topological phases of matter in periodically-driven optical lattices.

Periodic driving (Floquet engineering) allows us to realize topological band structures that have no static counterpart, such as anomalous Floquet topological insulators. Using fermionic potassium in a hexagonal optical lattice we study their bulk and edge properties.

Location: Ludwig-Maximilians-Universität München

Publications

Probing disorder-driven topological phase transitions via topological edge modes with ultracold atoms in Floquet-engineered honeycomb lattices

Alexander Hesse, Johannes Arceri, Moritz Hornung, Christoph Braun, Monika Aidelsburger

arXiv:2508.20154 (2025)

arXiv K hexagonal

Real-space detection and manipulation of topological edge modes with ultracold atoms

Christoph Braun, Raphaël Saint-Jalm, Alexander Hesse, Johannes Arceri, Immanuel Bloch, Monika Aidelsburger

Nature Physics 20, 1306-1312 (2024)

DOI K hexagonal

Realization of anomalous Floquet topological systems with ultracold atoms

K. Wintersperger, C. Braun, F. N. Ünal, A. Eckardt, M. Di Liberto, N. Goldman, I. Bloch, M. Aidelsburger

Nature Physics 16, 1058-1063 (2020)

DOI K hexagonal

Parametric instabilities of interacting bosons in periodically-driven 1D optical lattices

K. Wintersperger, M. Bukov, J. Näger, S. Lellouch, E. Demler, U. Schneider, I. Bloch, N. Goldman, M. Aidelsburger

Phys. Rev. X 10, 011030 (2020)

DOI K hexagonal