论文标题
表征光学天空和天际晶格的拓扑方法
Topological approach of characterizing optical Skyrmions and Skyrmion lattices
论文作者
论文摘要
可携带光学天空的天空数量可以通过利用Stokes定理的数学推导来仅通过其极化奇异性和相关的绕组数来定义。证明该定义提供了一种从实验数据中提取天空数的强大方法，如各种光学（Néel-type）Skyrmions和Bimerons及其相应的晶格所示。该方法不仅产生了准确性的提高，而且还提供了一种直观的几何方法来理解这种准光粒子的拓扑及其对平滑转化的稳健性。
The Skyrmion number of paraxial optical Skyrmions can be defined solely via their polarization singularities and associated winding numbers, using a mathematical derivation that exploits Stokes's theorem. It is demonstrated that this definition provides a robust way to extract the Skyrmion number from experimental data, as illustrated for a variety of optical (Néel-type) Skyrmions and bimerons, and their corresponding lattices. This method generates not only an increase in accuracy, but also provides an intuitive geometrical approach to understanding the topology of such quasi-particles of light, and their robustness against smooth transformations.
