首页|Information-entropy enabled identifying topological photonic phase in real space

Information-entropy enabled identifying topological photonic phase in real space

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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.

Information entropyKagome modelTopological photonic phase

Rui Ma、Qiuchen Yan、Yihao Luo、Yandong Li、Xingyuan Wang、Cuicui Lu、Xiaoyong Hu、Qihuang Gong

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State Key Laboratory for Mesoscopic Physics & Department of Physics,Collaborative Innovation Center of Quantum Matter & Frontiers Science Center for Nano-Optoelectronics,Peking University,Beijing 100871,China

The MOE Key Laboratory of Weak-Light Nonlinear Photonics,TEDA Applied Physics Institute and School of Physics,Nankai University,Tianjin 300457,China

College of Mathematics and Physics,Beijing University of Chemical Technology,Beijing 100029,China

Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education,Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems,School of Physics,Beijing Institute of Technology,Beijing 100081,China

Peking University Yangtze Delta Institute of Optoelectronics,Nantong 226010,China

Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

Hefei National Laboratory,Hefei 230088,China

Beijing Academy of Quantum Information Sciences,Beijing 100193,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaInnovation Program for Quantum Science and TechnologyBeijing Institute of Technology Research Fund Program for Teli Young FellowsBeijing Institute of Technology science and Technology Innovation Plan Innovative Talents Science and Technology Funding SpecialOpen Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum PhysicsNatural Science Foundation of Hebei ProvinceChina Postdoctoral Science Foundation

9215030212274031621750092021ZD0301500KF202114A20212010092023M740121

2024

10.1007/s12200-024-00113-7

光电子前沿(英文版)

光电子前沿(英文版)

CSTPCDEI
影响因子：0.049
ISSN：2095-2759
年,卷(期)：2024.17(2)