Floquet-Induced Superfluidity with Periodically Modulated Interactions of Two-Species Hardcore Bosons in a One-dimensional Optical Lattice

ORAL

Abstract

We consider two species of hard-core bosons with density dependent hopping in a one-dimensional optical lattice, for which we propose experimental realizations using time-periodic driving. The quantum phase diagram for half-integer filling is determined by combining different advanced numerical simulations with analytic calculations. We find that a reduction of the density-dependent hopping induces a Mott-insulator to superfluid transition. For negative hopping a previously unknown state is found, where one species induces a gauge phase of the other species, which leads to a superfluid phase of gauge-paired particles. The corresponding experimental signatures are discussed.

*DFG via CRC/TR185 (project number 277625399)

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Authors

  • Axel Pelster

    • Department of Physics and Research Center OPTIMAS, Technical University of Kaiserslautern, Germany
    • Department of Physics, University of Kaiserslautern, Germany
    • Department of Physics and Research Center OPTIMAS, Technische Universität Kaiserslautern
    • Physics Department and Research Center OPTIMAS, University of Kaiserslautern, Germany
    • Technical University of Kaiserslautern

  • Tao Wang

    • Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, China

  • Shijie Hu

    • Physics Department and Research Center OPTIMAS, University of Kaiserslautern, Germany

  • Sebastian Eggert

    • Physics Department and Research Center OPTIMAS, University of Kaiserslautern, Germany

  • Michael Fleischhauer

    • University of Kaiserslautern
    • Department of Physics, University of Kaiserslautern, Germany
    • Physics Department and Research Center OPTIMAS, University of Kaiserslautern, Germany

  • Xue-Feng Zhang

    • Department of Physics, Chongqing University, China