Information-entropy enabled identifying topological photonic phase in real space.
Front Optoelectron
; 17(1): 11, 2024 Apr 29.
Article
em En
| MEDLINE
| ID: mdl-38679690
ABSTRACT
The topological photonics plays an important role in the fields of fundamental physics and photonic devices. The traditional method of designing topological system is based on the momentum space, which is not a direct and convenient way to grasp the topological properties, especially for the perturbative structures or coupled systems. Here, we propose an interdisciplinary approach to study the topological systems in real space through combining the information entropy and topological photonics. As a proof of concept, the Kagome model has been analyzed with information entropy. We reveal that the bandgap closing does not correspond to the topological edge state disappearing. This method can be used to identify the topological phase conveniently and directly, even the systems with perturbations or couplings. As a promotional validation, Su-Schrieffer-Heeger model and the valley-Hall photonic crystal have also been studied based on the information entropy method. This work provides a method to study topological photonic phase based on information theory, and brings inspiration to analyze the physical properties by taking advantage of interdisciplinarity.
Texto completo:
1
Bases de dados:
MEDLINE
Idioma:
En
Revista:
Front Optoelectron
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China