标题： 极性分子在远失谐光场中的相互作用：纠缠的偶极子相互支撑或下垂 显示英文标题

标题： Interaction between polar molecules subject to a far-off-resonant optical field: Entangled dipoles up- or down-holding each other

摘要： 我们证明，当一对极性分子的电偶极-偶极相互作用被远距离共振光学场叠加时，会经历全面的转变。 结合的相互作用势能可以通过改变光学场的波长、偏振和强度进行调节，其对分子间距离的依赖关系表现出从反幂律到振荡行为的交叉。 由此提供的控制分子相互作用的能力，为创建和操控超冷极性气体的新相态开辟了途径，这些新相态的一个特征是偶极子相互取向的长程纠缠。 我们设计了一个精确的解析模型，用于描述这种光学场修饰的偶极-偶极相互作用势能，该模型能够直接获取实验室中设计分子间相互作用所需的光学场参数。 显示英文摘要

摘要： We show that the electric dipole-dipole interaction between a pair of polar molecules undergoes an all-out transformation when superimposed by a far-off resonant optical field. The combined interaction potential becomes tunable by variation of wavelength, polarization and intensity of the optical field and its dependence on the intermolecular separation exhibits a crossover from an inverse-power to an oscillating behavior. The ability thereby offered to control molecular interactions opens up avenues toward the creation and manipulation of novel phases of ultracold polar gases among whose characteristics is a long-range entanglement of the dipoles' mutual orientation. We devised an accurate analytic model of such optical-field-dressed dipole-dipole interaction potentials, which enables a straightforward access to the optical-field parameters required for the design of intermolecular interactions in the laboratory.