Dresden 2020 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 46: Many-body Quantum Dynamics I

DY 46.8: Vortrag

Donnerstag, 19. März 2020, 11:45–12:00, HÜL 186

Enhancement of local pairing correlations in periodically driven Mott insulators — •Francesco Peronaci1,2,3, Olivier Parcollet1,4, and Marco Schiró11Institut de Physique Théorique (IPhT), CEA, CNRS, UMR 3681, 91191 Gif-sur-Yvette, France — 2CPHT, Ecole Polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau, France — 3Max Planck Institute for the Physics of Complex Systems, Dresden 01187, Germany — 4Center for Computational Quantum Physics, Flatiron Institute, 162 Fifth Avenue, New York, NY 10010, USA

We investigate a model for a Mott insulator in presence of a time-periodic modulated interaction and a coupling to a thermal reservoir. The combination of drive and dissipation leads to non-equilibrium steady states with a large number of doublon excitations, well above the maximum thermal-equilibrium value. We interpret this effect as an enhancement of local pairing correlations, providing analytical arguments based on a Floquet Hamiltonian. Remarkably, this Hamiltonian shows a tendency to develop long-range staggered superconducting correlations. This suggests the possibility of realizing the elusive eta-pairing phase in driven-dissipative Mott Insulators.

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