Strongly correlated 2D quantum phases with cold polar molecules:   controlling the shape of the interaction potential
  We discuss techniques to tune and shape the long-range part of the interaction potentials in quantum gases of polar molecules by dressing rotational excitations with static and microwave fields. This provides a novel tool towards engineering strongly correlated quantum phases in combination with low dimensional trapping geometries. As an illustration, we discuss a 2D crystalline phase, and a superfluid-crystal quantum phase transition. 
H.P. B\"uchler, E. Demler, M. Lukin, A. Micheli, N. Prokof'ev, G.   Pupillo, and P. Zoller