Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 48: Poster Session: Many Body Systems, Quantum Critical Phenomena

TT 48.7: Poster

Mittwoch, 18. März 2020, 15:00–19:00, P2/4OG

Entanglement, spectra and Floquet engineering of topological many-body localized systems — •Kevin S.C. Decker1, Dante Kennes2,3, Jens Eisert4, and Christoph Karrasch11Technische Universität Braunschweig, Institut für Mathematische Physik, Mendelssohnstraße 3, 38106 Braunschweig, Germany — 2Institut für Theorie der Statistischen Physik, RWTH Aachen University and JARA-Fundamentals of Future Information Technology, 52056 Aachen, Germany — 3Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science, 22761 Hamburg, Germany — 4Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195 Berlin, Germany

Many-body localized systems in which interactions and disorder come together defy the expectations of quantum statistical mechanics: They do not thermalize when undergoing non-equilibrium dynamics. In this work, we numerically address how topological features interplay with many-body localized phases as well as the nature of the transition between a topological and a trivial state within the latter. We also show how second-order Floquet engineering can be employed to realize systems in which many-body localization coexists with topological properties in a driven system. This allows one to implement and dynamically control a symmetry protected topologically ordered qubit even at high energies, overcoming the road block that the respective states cannot be prepared as ground states of nearest-neighbor Hamiltonians.

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