Regensburg 2019 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 66: Ultrafast Dynamics of Light-Driven Systems
TT 66.2: Vortrag
Freitag, 5. April 2019, 10:00–10:15, H2
Floquet behavior of correlated systems with light-matter coupling — •Mona Kalthoff1, James Freericks2, Götz Uhrig3, Dante Kennes4, Angel Rubio1, and Michael Sentef1 — 1Max-Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany — 2Georgetown University, Washington, D.C., United States of America — 3Technische Universität Dortmund, Dortmund, Germany — 4Freie Universität Berlin, Berlin, Germany
Periodically driven nonequilibrium many-body systems have a quasi-energy spectrum which can be tailored by external driving fields, known as Floquet engineering of desired system properties[1]. However, continuous periodic driving is not realizable in pump-probe experiments in solids. For instance it is not clear which criteria a pulse has to meet for a system exposed to a pulsed drive to approach the Floquet limit of a periodically driven system. However, there are analytical results for noninteracting band electrons in infinite dimensions[2]. Moreover we discuss t-DMRG results for interacting 1D chains in the charge density wave phase to study the emergence of Floquet behavior for realistic pulse shapes. This builds on the recently proposed Floquet engineering in quantum chains[3].
Sentef et al., Nat. Comm. 6, 7047 (2015); Uhrig et al, arXiv:1808.10199 (2018)
Kalthoff et al., Phys. Rev. B 98, 035138 (2018)
Kennes et al., Phys. Rev. Lett. 120, 127601 (2018)