Büchler H P, Demler E, Lukin M, Micheli A, Prokof'ev N, Pupillo G, Zoller P
Institute for Theoretical Physics, University of Innsbruck, 6020 Innsbruck, Austria.
Phys Rev Lett. 2007 Feb 9;98(6):060404. doi: 10.1103/PhysRevLett.98.060404. Epub 2007 Feb 8.
We discuss techniques to tune and shape the long-range part of the interaction potentials in quantum gases of bosonic 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 the 2D superfluid-crystal quantum phase transition for polar molecules interacting via an electric-field-induced dipole-dipole potential.
我们讨论了通过用静态场和微波场修饰旋转激发来调整和塑造玻色子极性分子量子气体中相互作用势的长程部分的技术。这为结合低维捕获几何结构来设计强关联量子相提供了一种新颖的工具。作为一个例证，我们讨论了通过电场诱导的偶极 - 偶极势相互作用的极性分子的二维超流体 - 晶体量子相变。
