Non-Hermitian systems have attracted much attention during the past few years.Non-Hermitian terms can be introduced into the model Hamiltonian to give a good description of open systems.The presence of such terms will modify the system's properties in a significant way,leading to phenomena that cannot be found in Hermitian systems,such as the exceptional point,the non-Hermitian skin effect,etc.These exotic effects are not only important in theoretical studies,they are potential for applications in designing new types of quantum sensors and lasers.Based on the authors'recent research work on non-Hermitian physics,this paper summarizes the recent progress on one-dimensional non-Hermitian systems with asymmetric hopping.
关键词
非厄米系统/非厄米趋肤效应/一维系统
Key words
non-Hermitian systems/non-Hermitian skin effect/one-dimensional systems
维普
万方数据