具有非对称跃迁的一维非厄米系统研究进展  

Research progress on one-dimensional Non-Hermitian systems with asymmetric hopping

作　　者：肖涵 侯博 曾琦波 XIAO Han;HOU Bo;ZENG Qibo(Department of Physics,Capital Normal University,Beijing 100048)

机构地区：[1]首都师范大学物理系,北京100048

出　　处：《首都师范大学学报（自然科学版）》2024年第2期84-94,114,共12页Journal of Capital Normal University：Natural Science Edition

基　　金：国家自然科学基金项目(12204326)。

摘　　要：近年来,非厄米系统受到了物理学各个领域的广泛关注并被深入研究。通过在系统的哈密顿量中引入非厄米项,可以对开放系统做出很好地描述;而非厄米项的存在,往往会深刻地改变系统的性质,从而出现诸如奇异点、非厄米趋肤效应等在传统的厄米系统中不存在的现象。这些新奇效应不仅在理论研究上具有重要意义,在设计新型量子传感器和激光器等实际应用方面也具有巨大潜力。本文基于过去几年在非厄米系统方面的研究工作,对具有非对称跃迁的一维非厄米系统的研究进展进行了总结。Non-Hermitian systems have attracted much attention during the past few years.NonHermitian 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 nonHermitian 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 onedimensional 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 

分 类 号：O413[理学—理论物理]