Inverse design of dual-band valley-Hall topological photonic crystals with arbitrary pseudospin states

Yuki Sato, Shrinathan Esaki Muthu Pandara Kone, Junpei Oba +1

Valley photonic crystals (VPCs) offer topological kink states that ensure robust, unidirectional, and backscattering-immune light propagation. The design of VPCs is typically based…