Nanowerk  March 21, 2024 Modulation of topological phase transition has been realized in Euclidean systems. However, the spin-controlled topological phase transition in non-Euclidean space has not yet been explored. Researchers in China proposed a non-Euclidean configuration based on Möbius rings, and demonstrated the spin-controlled transition between the topological edge state and the bulk state. They utilized 8π period Möbius rings to construct both one-dimensional and two-dimensional coupled resonator optical waveguide (CROW) configurations which supported topological edge states excited by circularly polarized light of a specific handedness, while forbidding the excitation of topological modes by light of the opposite handedness. This […]