Jen H H
Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan.
Sci Rep. 2018 May 8;8(1):7163. doi: 10.1038/s41598-018-25592-5.
We theoretically investigate the far-field scattering properties of multiphoton super- and subradiant states which can be prepared by multiphoton excitations with orbital angular momentum (OAM). Due to multiphoton interference, the far-field patterns of the subradiant modes show directional scattering along the excitation direction or transverse scattering with number of peaks equal to the number of atoms. When more atoms are involved, we consider structures of stacked and concentric rings, which respectively show enhanced directional scattering and smoothed emission patterns. Our scheme gives insights to prepare many-body subradiant states, and is potentially applicable to quantum storage of multiphoton with OAM. By designing atomic spatial distributions, these cooperative states can tailor the far-field emission properties, which is useful for light collections and quantum information manipulations.
我们从理论上研究了多光子超辐射和亚辐射态的远场散射特性，这些态可通过具有轨道角动量（OAM）的多光子激发来制备。由于多光子干涉，亚辐射模式的远场图案显示出沿激发方向的定向散射或具有与原子数相等的峰值数的横向散射。当涉及更多原子时，我们考虑堆叠环和同心环结构，它们分别显示出增强的定向散射和平滑的发射图案。我们的方案为制备多体亚辐射态提供了思路，并且有可能应用于具有OAM的多光子的量子存储。通过设计原子空间分布，这些合作态可以调整远场发射特性，这对于光收集和量子信息操纵是有用的。
