Tao Wang, Shijie Hu, Sebastian Eggert, Michael Fleischhauer, Axel Pelster, and Xue-Feng Zhang:
🔓 Phys. Rev. Research, 2, 013275 (2020)
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.