Metasurfaces, as open optical systems, are widely regarded as ideal platforms for creating and exploiting topological exceptional points (EPs) due to their outstanding light-field manipulation ...
Point-free topology, often referred to as locale theory, reimagines classical topological spaces in terms of the lattice of opens rather than individual points. At its heart lies the notion of a frame ...
Topological materials can be categorized into several types, including topological insulators, topological superconductors, and topological semimetals. Each type exhibits unique electronic properties ...