Tunable superfluidity and quantum magnetism with ultracold polar molecules.

  title={Tunable superfluidity and quantum magnetism with ultracold polar molecules.},
  author={Alexey V. Gorshkov and S. Manmana and Gang Chen and Jun Ye and Eugene A. Demler and Mikhail D. Lukin and Ana Maria Rey},
  journal={Physical review letters},
  volume={107 11},
By selecting two dressed rotational states of ultracold polar molecules in an optical lattice, we obtain a highly tunable generalization of the t-J model, which we refer to as the t-J-V-W model. In addition to XXZ spin exchange, the model features density-density interactions and density-spin interactions; all interactions are dipolar. We show that full control of all interaction parameters in both magnitude and sign can be achieved independently of each other and of the tunneling. As a first… CONTINUE READING
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