SAMOP 2021 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 13: Quantum Gases and Matter Waves (joint session Q/A)
A 13.16: Poster
Dienstag, 21. September 2021, 16:30–18:30, P
Realization of an anomalous Floquet topological system with ultracold atoms — •Christoph Braun1,2,3, Raphaël Saint-Jalm1,2, Alexander Hesse1,2, Monika Aidelsburger1,2, and Immanuel Bloch1,2,3 — 1Ludwig-Maximilians-Universität München, München, Germany — 2Munich Center for Quantum Science and Technology (MCQST), München, Germany — 3Max-Planck-Institut für Quantenoptik, Garching, Germany
Floquet engineering has proven as a powerful experimental tool for the realization of quantum systems with exotic properties. We study anomalous Floquet systems that exhibit robust chiral edge modes, despite all Chern numbers being equal to zero. The system consists of bosonic atoms in a periodically driven honeycomb lattice and we infer the topological invariants from measurements of the energy gap and local Hall deflections.
An interesting future direction is the interplay between topology and disorder in periodically-driven systems. In particular the existence of disorder-induced topological phases such as the anomalous Floquet Anderson insulator show the interesting link between topology and disorder.