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physics.optics2024
Optical polarization singularities in metallic cavities excited by electric dipole sources
Shiqi Jia, Tong Fu, Shubo Wang
Optical polarization singularities (PSs) in real space carry rich topological properties and can enable highly precise manipulations of light fields. Conventional studies focus on…
physics.optics2024
Topological Dark Spots of Electric Near Field in Metal Structures
Tong Fu, Qing Tong, Shiqi Jia +1
Electric dark spots are point singularities at which the electric field amplitude vanishes. These singularities usually emerge in real space accidentally and are unstable due to th…
physics.optics2024
Near-field Spin Chern Number Quantized by Real-space Topology of Optical Structures
Tong Fu, Ruo-Yang Zhang, Shiqi Jia +2
The Chern number has been widely used to describe the topological properties of periodic structures in the momentum space. Here, we introduce a real-space spin Chern number for the…