Floquet-induced superfluidity with periodically modulated interactions of two-species hardcore bosons in a one-dimensional optical lattice

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 simu...

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Bibliographic Details
Published inPhysical review research Vol. 2; no. 1; p. 013275
Main Authors Wang, Tao, Hu, Shijie, Eggert, Sebastian, Fleischhauer, Michael, Pelster, Axel, Zhang, Xue-Feng
Format Journal Article
LanguageEnglish
Published American Physical Society 06.03.2020
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Summary: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 gauge-dressed superfluid 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.
ISSN:2643-1564
2643-1564
DOI:10.1103/PhysRevResearch.2.013275