SciPost Physics

SciPost Phys. 5, 017 (2018) · published 16 August 2018

• doi: 10.21468/SciPostPhys.5.2.017
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Abstract

We show that a quantum many-body system may be controlled by means of Floquet engineering, i.e., their properties may be controlled and manipulated by employing periodic driving. We present a concrete driving scheme that allows control over the nature of mobile units and the amount of diffusion in generic many-body systems. We demonstrate these ideas for the Fermi-Hubbard model, where the drive renders doubly occupied sites (doublons) the mobile excitations in the system. In particular, we show that the amount of diffusion in the system and the level of fermion-pairing may be controlled and understood solely in terms of the doublon dynamics. We find that under certain circumstances the diffusion in the system may be eliminated completely. We conclude our work by generalizing these ideas to generic many-body systems.

• Chaudhary et al., Orbital Floquet engineering of exchange interactions in magnetic materials
  Phys. Rev. B 100, 220403 (2019) [Crossref]
• Messer et al., Floquet Dynamics in Driven Fermi-Hubbard Systems
  Phys. Rev. Lett. 121, 233603 (2018) [Crossref]
• van Nieuwenburg et al., From Bloch oscillations to many-body localization in clean interacting systems
  Proc. Natl. Acad. Sci. U.S.A. 116, 9269 (2019) [Crossref]
• Peronaci et al., Enhancement of local pairing correlations in periodically driven Mott insulators
  Phys. Rev. B 101, 161101 (2020) [Crossref]