Photonic non-Hermitian skin effect and non-Bloch bulk-boundary correspondence
Xue-Yi Zhu, Huaiqiang Wang, Samit Kumar Gupta, Haijun Zhang, Biye Xie, Ming‐Hui Lu, Yan‐Feng Chen
Abstract
The authors demonstrate a feasible design of a one-dimensional non-Hermitian Su-Schrieffer-Heeger model based on photonic coupled resonant optical waveguides. The phase transition points are different from those of the periodic boundary, thus revealing a non-Bloch bulk-boundary correspondence. Moreover, the field distribution is found to be exponentially localized at the ends of an open-boundary chain, which demonstrates a non-Hermitian skin effect.
Topics & Concepts
Hermitian matrixBoundary (topology)Skin effectPhotonicsPhysicsBoundary value problemField (mathematics)Mathematical analysisQuantum mechanicsCondensed matter physicsMathematicsPure mathematicsQuantum Mechanics and Non-Hermitian PhysicsNonlinear Photonic SystemsNonlinear Waves and Solitons