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

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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.

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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