论文标题
一维原子链中共振光散射的集体转移
Collective shift in resonant light scattering by a one-dimensional atomic chain
论文作者
论文摘要
我们通过一维冷两层原子的一维随机链链实验研究谐振光散射。通过局部测量沿链条散射的光，我们观察到了原子之间光诱导的偶极双极相互作用的建设性干扰。尽管平均原子间距离大于光的波长，但它们导致集体共振的转移。该结果表明，可以通过构建合奏的几何布置来增强强大的集体效应。我们还探索了无法经典描述原子的高强度制度。我们将测量值与平均场，非线性耦合偶极模型模型进行比较，该模型占单个原子响应的饱和度。
We experimentally study resonant light scattering by a one-dimensional randomly filled chain of cold two-level atoms. By a local measurement of the light scattered along the chain, we observe constructive interferences in light-induced dipole-dipole interactions between the atoms. They lead to a shift of the collective resonance despite the average interatomic distance being larger than the wavelength of the light. This result demonstrates that strong collective effects can be enhanced by structuring the geometrical arrangement of the ensemble. We also explore the high intensity regime where atoms cannot be described classically. We compare our measurement to a mean-field, nonlinear coupled-dipole model accounting for the saturation of the response of a single atom.
