非厄米拓扑电路：具有增益-损耗调制的拓扑状态工程的便利工具
Non-Hermitian Topoelectrical Circuits: Expedient Tools for Topological State Engineering with Gain-Loss Modulation
摘要：
拓扑量子和经典系统与非厄米物理思想的结合在过去几年中产生了巨大的研究兴趣。虽然与非平凡拓扑方面相关的概念为我们提供了对无序免疫态的访问，但最初在量子场论框架内发展的非厄米物理学对开放量子系统的研究做出了重大贡献。特别是在光学和光子学中，对具有平衡损耗和增益的非厄米哈密顿量的研究导致了许多违反直觉的现象。然而，这种系统的实验实现是具有挑战性的，并且广泛地感觉到需要用于测试理论命题和概念证明演示的替代平台。在这种情况下，有源电气和电子电路已被证明是一个多产的替代方案，并已受到越来越多的关注;主要是，拓扑电路，在许多情况下，促进了与非厄米物理学结合的拓扑概念的研究，超越了凝聚态系统的限制。本文简要介绍了这些非厄米拓扑电路，并将讨论一些新的物理学的拓扑绝缘体和半金属，可以方便地实现和探索这种配置。
英文摘要：
The congregation of topological quantum and classical systems with the ideas of non-Hermitian physics has generated enormous research interest in the last few years. While the concepts associated to non-trivial topological aspects have provided us an access to the disorder immune states, non-Hermitian physics, which was initially developed within the framework of quantum field theories, has contributed significantly to the study of open quantum systems. Particularly in optics and photonics, the study of non-Hermitian Hamiltonians with balanced loss and gain has resulted in many counter-intuitive phenomena. However, the experimental realization of such systems is challenging, and the need for alternative platforms for testing theoretical propositions and proof of concept demonstrations is widely felt. In this context, active electrical and electronic circuitry has proved to be a prolific alternative and has been receiving increasing attention; mainly, the topoelectric circuits, in many instances, have facilitated the investigation of topological conceptions in conjunction with non-Hermitian physics, beyond the limitations of the condensed matter systems. This article provides a succinct introduction to these non-Hermitian topoelectrical circuits and will also discuss some of the novel physics of topological insulators and semimetals that can be conveniently realized and explored in such configurations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
