Topological Boundary States in 1D: An Effective Fabry-Perot Model
arXiv:1610.09562 · doi:10.1140/epjst/e2016-60341-8
Abstract
We present a general and useful method to predict the existence, frequency, and spatial properties of gap states in photonic (and other) structures with a gapped spectrum. This method is established using the scattering approach. It offers a viewpoint based on a geometrical Fabry-Perot model. We demonstrate the capabilities of this model by predicting the behaviour of topological edge states in quasi-periodic structures. A proposition to use this model in Casimir physics is presented.