Floquet-engineered pair and single particle filter in the Fermi Hubbard model

Abstract

We investigate the Fermi-Hubbard model with a Floquet-driven impurity in the form of a local time-oscillating potential. For strong attractive interactions a stable formation of pairs is observed. These pairs show a completely different transmission behavior than the transmission that is observed for the single unpaired particles. Whereas in the high frequency limit the single particles show a maximum of the transition at low driving amplitudes, the pairs display a pronounced maximum transmission when the amplitude of the driving lies close to the ratio of the interaction U and the driving frequency ω. We use the distinct transmission behaviour to design filters for pairs or single particles, respectively. For example one can totally block the transmission of single particles through the driven impurity and allow only for the transmission of pairs. We quantify the quality of the designed filters.

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Cited by in corpus (7)

• Nonlinear transport in the presence of a local dissipation
• Emergent strong zero mode through local Floquet engineering
• Momentum resolved Floquet-engineered pair and single particle filter in the Fermi Hubbard model
• Majorana edge-modes in a spinful particle conserving model
• Understanding Floquet Resonances in Ultracold Gas Scattering
• Real space thermalization of locally driven quantum magnets
• Suppression of scattering from slow to fast subsystems and application to resonantly Floquet-driven impurities in strongly interacting systems