论文标题
观察超低原子气中光诱导的偶极偶极力
Observation of Light-Induced Dipole-Dipole Forces in Ultracold Atomic Gases
论文作者
论文摘要
我们研究了自由扩展的超低87rb原子中光引起的偶极 - 偶极相互作用引起的吸引力。这种集体的，光触发的效果导致具有有趣特征的自我限制潜力：它具有非本地性能，对红色和蓝色传播的光场都具有吸引力，并引起了一个非常强大的力，取决于原子密度的梯度。在理论模型的框架中讨论了实验数据，该框架基于原子云散射的光的局部场方法。
We investigate an attractive force caused by light induced dipole-dipole interactions in freely expanding ultracold 87Rb atoms. This collective, light-triggered effect results in a self-confining potential with interesting features: it exhibits nonlocal properties, is attractive for both red and blue-detuned light fields and induces a remarkably strong force that depends on the gradient of the atomic density. The experimental data are discussed in the framework of a theoretical model based on a local-field approach for the light scattered by the atomic cloud.
