论文标题
由合作反应引起的原子阵列中的光学磁性和Huygens的表面
Optical Magnetism and Huygens' Surfaces in Arrays of Atoms Induced by Cooperative Responses
论文作者
论文摘要
通过在原子与电偶极转换的原子阵列中利用强光谐振相互作用，我们展示了如何合成与磁性偶极子和其他多物阵列形成的集体光学响应相对应的集体光学响应。在阵列的集体激发特征模中实现了具有与电偶极转变相当的强度的光学活性磁性。通过控制原子水平的偏移，可以激发一系列频谱重叠，交叉的电气和磁偶极子，从而可以实现几乎无反射的无量子Huygens表面，并具有整个$2π$相位的传输光相位控制，从而可以在单个光子水平上进行极端的波动工程。我们通过将平面波转换为涡流束来说明这一点。
By utilizing strong optical resonant interactions in arrays of atoms with electric dipole transitions, we show how to synthesize collective optical responses that correspond to those formed by arrays of magnetic dipoles and other multipoles. Optically active magnetism with the strength comparable with that of electric dipole transitions is achieved in collective excitation eigenmodes of the array. By controlling the atomic level shifts, an array of spectrally overlapping, crossed electric and magnetic dipoles can be excited, providing a physical realization of a nearly-reflectionless quantum Huygens' surface with the full $2π$ phase control of the transmitted light that allows for extreme wavefront engineering even at a single photon level. We illustrate this by transforming a plane wave into a vortex beam.
