Topological photonics in nanoscaled systems with far field radiation and polarization singularities
The paper argues that standard topological band theory for photonic crystals is insufficient because it ignores intrinsic nanophotonic effects like polarization and far-field radiation. It proposes extending this theory to properly treat these effects, highlighting the role of polarization singularities in defining far-field topological invariants, which are crucial for understanding next-generation devices.