论文标题
光线中的4D拓扑纹理
4D topological textures in light
论文作者
论文摘要
我们在（准）单色非选项光学晶格中呈现4D拓扑纹理，其中包含所有可能的极化椭圆形，椭圆度和方向在3D空间中的各种组合。这些磁场跨越了非帕型极化空间（复杂的投射平面）和在特定时空区域内的4个球体，形成了4D Skyrmionic结构。由五个具有绝热相对振幅变化的平面波构造，它们通过将具有高数值光圈透镜的时间变体光束聚焦在自由空间中实验可实现。
We present 4D topological textures in (quasi)monochromatic nonparaxial optical lattices that contain all possible polarization ellipses with every combination of ellipticity and orientation in 3D space. These fields span the nonparaxial polarization space (a complex projective plane) and a 4-sphere within specific spatiotemporal regions, forming 4D skyrmionic structures. Constructed from five plane waves with adiabatically varying relative amplitudes, they are experimentally realizable in free space by focusing a temporally variant beam with a high numerical aperture lens.
