Generalized Su-Schrieffer-Heeger Model in One Dimensional Optomechanical Arrays

Frontiers in Physics

Physics

Ai-Xi Chen¹  Hui Wang²  Yu-Xi Liu³  Xun-Wei Xu⁴  Yan-Jun Zhao⁵ 

[1] Department of Physics, Zhejiang Sci-Tech University, Hangzhou, China;Inspur Academy of Science and Technology, Jinan, China;Institute of Microelectronics, Tsinghua University, Beijing, China;Beijing National Research Center for Information Science and Technology (BNRist), Beijing, China;Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, China;Department of Applied Physics, East China Jiaotong University, Nanchang, China;Key Laboratory of Opto-electronic Technology, Ministry of Education, Beijing University of Technology, Beijing, China;

关键词: optomechanical arrays;    generalized Su-Schrieffer-Heeger model;    topological phases;    edge states;    adiabatic particle pumping;   

DOI  :  10.3389/fphy.2021.813801

 received in 2021-11-12, accepted in 2021-12-08,  发布年份 2022

来源: Frontiers

【 摘 要 】

We propose an implementation of a generalized Su-Schrieffer-Heeger (SSH) model based on optomechanical arrays. The topological properties of the generalized SSH model depend on the effective optomechanical interactions which can be controlled by strong driving fields. Three phases including one trivial and two distinct topological phases are found in the generalized SSH model. The phase transition can be observed by turning the strengths and phases of the effective optomechanical interactions via adjusting the driving fields. Moreover, four types of edge states can be created in generalized SSH model of an open chain under single-particle excitation, and the dynamical behaviors of the excitation in the open chain are related to the topological properties under the periodic boundary condition. We show that the edge states can be pumped adiabatically along the optomechanical arrays by periodically modulating the amplitude and frequency of the driving fields, and the state pumping is robust against small disorders. The generalized SSH model based on the optomechanical arrays provides us a controllable platform to engineer topological phases for photons and phonons, which may have potential applications in controlling the transport of photons and phonons.

【 授权许可】

Unknown   
Copyright © 2022 Xu, Zhao, Wang, Chen and Liu.