Interaction signatures and non-Gaussian photon states from a strongly driven atomic ensemble coupled to a nanophotonic waveguide
Interaction signatures and non-Gaussian photon states from a strongly driven atomic ensemble coupled to a nanophotonic waveguide
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来自与纳米光子波导耦合的强驱动原子系综的相互作用特征和非高斯光子态
DOI：
10.1103/physreva.102.043711
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发表时间：
2020
影响因子：
2.9
通讯作者：
I. Lesanovsky
中科院分区：
文献类型：
--
作者：
B. Olmos;G. Buonaiuto;P. Schneeweiss;I. Lesanovsky
我们从理论上研究了激光驱动的一维原子链与纳米光子波导的导光模的界面。可以选择链的周期和激光场的取向，使得发射主要发生在单个导模中。我们发现荧光激发线的形状随着原子数的增加而改变，最终经历分裂，为波导介导的全对全相互作用提供了证据。值得注意的是，在强驱动的情况下，发射到波导中的光是非经典的，具有相关的维格纳函数的显著负性。我们表明，无论是发射特性和非高斯特性的光是强大的对原子链中的空隙，使这些影响的实验研究与当今的技术。我们的研究结果提供了一条通往新型光纤耦合量子光源的途径，并为探索通过光相互作用原子系综的物理学提供了一个有趣的视角。
We study theoretically a laser-driven one-dimensional chain of atoms interfaced with the guided optical modes of a nanophotonic waveguide. The period of the chain and the orientation of the laser field can be chosen such that emission occurs predominantly into a single guided mode. We find that the fluorescence excitation line shape changes as the number of atoms is increased, eventually undergoing a splitting that provides evidence for the waveguide-mediated all-to-all interactions. Remarkably, in the regime of strong driving the light emitted into the waveguide is non-classical, with a significant negativity of the associated Wigner function. We show that both the emission properties and the non-Gaussian character of the light are robust against voids in the atom chain, enabling the experimental study of these effects with present-day technology. Our results offer a route towards novel types of fiber-coupled quantum light sources and an interesting perspective for probing the physics of interacting atomic ensembles through light.