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Disorder and Interactions in Topological Floquet Systems

This project aims at studying the topological properties of ultracold atoms in a periodically-driven honeycomb optical lattice in the presence of disorder and interactions. It relies on an already-existing experimental setup that... ver más

31/03/2023

LMU MUENCHEN

163K€

Presupuesto del proyecto: 163K€

Líder del proyecto

LUDWIGMAXIMILIANSUNIVERSITAET MUENCHEN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2023-03-31

MSCA-IF-2020: Individual Fellowships

I+D

Cerrada hace 4 años

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No hay información privada compartida para este proyecto. Habla con el coordinador.

1 Participantes

LMU MUENCHEN

162.81K€ | Lider

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Duración del proyecto: 24 meses Fecha Inicio: 2021-03-11
Fecha Fin: 2023-03-31

Líder del proyecto

LUDWIGMAXIMILIANSUNIVERSITAET MUENCHEN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 163K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto This project aims at studying the topological properties of ultracold atoms in a periodically-driven honeycomb optical lattice in the presence of disorder and interactions. It relies on an already-existing experimental setup that can routinely create topological Floquet phases with weakly-interacting bosonic potassium atoms. The development of several technical tools will allow for the investigation of yet-unexplored topological phases of matter and bring solutions to the inherent heating due to the periodic driving. A first task is the direct observation of topological edge states and the realization of a Chern number 2 topological phase. This requires the implementation of a box potential and a better control of the laser beams providing the optical lattice. It will provide for the first time a complete picture of the bulk-edge correspondence and of the phase diagram of Floquet systems. A second set of experiments involves the setting of a disorder potential, and will bring into light 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 will be demonstrated. In this phase, the bulk is fully localized and topologically-protected edge states do exist. In the last part of the project, a vertical confinement will be implemented, and it will be combined with the tuning of interactions with a Feshbach resonance to bring the system to a strongly-interacting regime. There, interesting phases of matter can be explored, such as a fermionization of the gas loaded in a so-called moat band. More strikingly, a topological many-body-localized Floquet phase can be realized, where the strongly-interacting particles undergo a periodic driving, but are resilient to heating while supporting a topological edge state.

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