Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 8: Quantum Gases (Bosons) II
Q 8.6: Vortrag
Montag, 14. März 2022, 17:45–18:00, Q-H10
Disorder in topological Floquet engineered systems. — •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, i.e. periodic modulation of the systems parameters, has proven as a powerful experimental tool for the realization of quantum systems with exotic propertiest that are otherwise not accessible in static realizations. Our experimental system consists of bosonic atoms in a periodically driven honeycomb lattice. Depending on the driving parameters several topological phases can be realized, including genuine out-of-equilibrium topological phases without any static analog [1]. Recently, we have added a random optical potential to study localization in topological bands. To this end we are investigating the real-space evolution of an initially localized wavepacket after release from a tightly-focused optical tweezer. In general, disorder will drive a transition to a topologically trivial phase. The interplay between topology and disorder in driven systems, however, was further predicted to give rise to exotic disorder-induced topological phases, such as the anomalous Floquet Anderson insulator.