Topological circuit of a versatile non-Hermitian quantum system

• 作者: David-Andres Galeano Xiao-Xiao Zhang Jorge Mahecha
• 来源期刊: 中国科学：物理学 力学 天文学（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Article
• 页码范围: 53-60
• 页数: 8页
• 语种: 英文

摘要

We propose a resistors,inductors and capacitors (RLC) electrical circuit to theoretically analyze and fully simulate a new type of non-Hermitian Su-Schrieffer-Heeger (SSH) model with complex hoppings.We formulate its construction and investigate its properties by taking advantage of the circuit's versatility.Rich physical properties can be identified in this system from the normal modes of oscillation of the RLC circuit,including the highly tunable bulk-edge correspondence between topological winding numbers and edge states and the non-Hermitian skin phenomenon originating from a novel complex energy plane topol-ogy.The present study is able to show the wide and appealing topological physics inherent to electric circuits,which is readily generalizable to a plenty of both Hermitian and non-Hermitian nontrivial systems.