Large-area quantum-spin-Hall waveguide states in a three-layer topological photonic crystal heterostructure
Zhihao Lan, Menglin L. N. Chen, Jian Wei You, Wei E. I. Sha
Abstract
Topological photonic edge states usually are formed at the interface between two domains of topologically trivial and nontrivial photonic crystals. The authors propose topological waveguide states with tunable widths in a three-layer topological photonic crystal heterostructure, which exhibit a helical pseudospin-momentum locking feature of the quantum spin Hall effect.
Topics & Concepts
HeterojunctionPhotonic crystalSpin (aerodynamics)Quantum Hall effectCondensed matter physicsLayer (electronics)PhysicsQuantum spin Hall effectPhotonicsTopology (electrical circuits)Materials scienceOptoelectronicsQuantum mechanicsNanotechnologyElectronEngineeringElectrical engineeringThermodynamicsTopological Materials and PhenomenaPhotonic Crystals and ApplicationsPhotorefractive and Nonlinear Optics