相关参考文献
注意：仅列出部分参考文献，下载原文获取全部文献信息。
Article
Physics, Multidisciplinary
Xin Yang et al.
Summary: The transient parity-time (PT) symmetry in electronics is demonstrated in this study. By equivalent circuit transformation according to the switching states of electronic systems, the PT symmetry is revealed. Using the phasor method and Laplace transformation, the hidden PT-symmetric Hamiltonian in the switching oscillation is derived, which is characterized by free oscillation modes. The spectral and dynamic properties of the PT electronic structure demonstrate the phase transition and eigenmode orthogonality. Importantly, the observed transient PT symmetry enables optimal switching oscillation suppression induced by exceptional points, showing the significance of PT symmetry in electronic systems with temporary responses. The study paves the way for breakthroughs in PT symmetry theory and has essential applications such as anti-interference in switch-mode electronics.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Stefano Longhi
Summary: A unique feature of non-Hermitian systems is the skin effect, which refers to the edge localization of a considerable number of bulk-band eigenstates in a lattice with specific boundaries. Unlike Bloch waves in Hermitian systems, the skin modes in non-Hermitian systems are normalizable eigenstates originating from the intrinsic non-Hermitian point-gap topology of the Bloch band energy spectra. Additionally, these skin modes exhibit a fascinating property known as self-healing, where they can reconstruct their shape after being scattered by a space-time potential.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Wei Wang et al.
Summary: The non-Hermitian skin effect (NHSE) is utilized to reshape the wavefunctions of topological modes (TMs) by delocalizing them from the boundary. The in-gap TMs become completely extended and form robust extended modes, protected by bulk-band topology, even against local disorders. Experimental realization in different topological lattices demonstrates the deformation of TMs into various shapes.
Article
Physics, Multidisciplinary
Bofeng Zhu et al.
Summary: We propose a new laser structure that can achieve single-mode laser output at high pump powers. The structure exhibits multimode lasing at low output powers but transitions to single-mode lasing beyond a certain pump power. This phenomenon occurs in a lattice of coupled optical resonators with non-fine-tuned asymmetric couplings, resulting from an interaction between nonlinear gain saturation and the non-Hermitian skin effect.
PHYSICAL REVIEW LETTERS
(2022)
Review
Nanoscience & Nanotechnology
Haoran Xue et al.
Summary: Topological acoustics is an emerging field that explores the design and construction of artificial structures to manipulate sound waves using topological protection. Recent research has focused on exploring new topological concepts in physical systems. These developments demonstrate the importance of topological acoustic systems in advancing topological physics.
NATURE REVIEWS MATERIALS
(2022)
Article
Optics
Henning Schomerus
Summary: Using scattering theory, the consequences of physical constraints on the visibility of non-Hermitian effects in passive devices are quantified. These constraints arise from the requirement of causality and can be captured concisely using an internal time-delay operator. The implications are illustrated by contrasting the effects of exceptional points and the non-Hermitian skin effect, which are undetectable in the density of states.
Article
Materials Science, Multidisciplinary
He Gao et al.
Summary: This study introduces a variant of the non-Hermitian skin effect, called the anomalous Floquet NHSE, achieved by fixed on-site gain or loss in a one-dimensional coupled ring resonator lattice. The experimental implementation in an acoustic lattice shows good agreement with theoretical predictions, with a broadband asymmetric transmission achieved with a relative bandwidth of around 40%.
Review
Physics, Applied
Kun Ding et al.
Summary: Non-Hermitian theory is a theoretical framework used to describe open systems, featuring unique mathematical structures and topological properties. It accurately describes the degrees of freedom and interactions of a system with the external environment, and has significant implications in applications. This Review provides an overview of non-Hermitian topology and discusses recent developments in the field.
NATURE REVIEWS PHYSICS
(2022)
Review
Physics, Multidisciplinary
Emil J. Bergholtz et al.
Summary: This review discusses the current understanding of the role of topology in non-Hermitian systems and its physical consequences in dissipative settings, focusing on the concept of exceptional degeneracies and its distinct phenomena, as well as the new notions of gapped phases in single-band systems. The unique sensitivity of non-Hermitian matrices to boundary conditions is highlighted, leading to anomalous relationships between bulk and boundary physics. Additionally, applications of non-Hermitian topology in classical and quantum systems are reviewed, showing its relevance beyond the field of topological phases.
REVIEWS OF MODERN PHYSICS
(2021)
Article
Multidisciplinary Sciences
Deyuan Zou et al.
Summary: This work reports the experimental realizations of hybrid higher-order skin-topological effect in non-reciprocal topoelectrical circuits, showcasing the dynamic interplay of non-reciprocal pumping and topological localization to form various states. Through a highly versatile and scalable circuit platform, the authors demonstrate higher-order topological skin effects, paving the way for applications in topological switching and sensing.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Yangyang Chen et al.
Summary: Mechanical metamaterials exhibit unique properties not found in ordinary materials, such as active metamaterials with self-sensing characteristics demonstrated by the authors. These active metamaterials can convert electrical energy into mechanical work, and their odd modulus allows for localized vibrational modes at sample boundaries.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Li Zhang et al.
Summary: The experimental realization of the non-Hermitian skin effect in a one-dimensional non-reciprocal acoustic crystal demonstrates unique features such as bipolar localization and Bloch point, revealing previously unnoticed characteristics of NHSE originating from complex non-Hermitian winding topology.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Shuo Liu et al.
Summary: The conventional bulk-boundary correspondence fails in certain non-Hermitian systems with broken reciprocity, while a non-Bloch bulk-boundary condition based on a non-Bloch winding number can accurately predict the number of topological edge states.
Article
Physics, Multidisciplinary
Huanan Li et al.
Summary: The study proposes a new pathway for PT symmetry using the evanescent field excitation of anti-PT-symmetric structures, demonstrating an important link between non-Hermitian physics and near-field interactions with implications in nanophotonics, plasmonics, and acoustics for applications in nanoimaging, sensing, and communications.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
Xiujuan Zhang et al.
Summary: The study demonstrates the higher-order non-Hermitian skin effect in two-dimensional acoustic higher-order topological insulators, where non-Hermiticity drives wave localizations toward opposite edges upon different spin polarizations. Additionally, for finite systems with both edges and corners, the higher-order non-Hermitian skin effect leads to wave localizations toward two opposite corners in a spin-dependent manner, allowing for rich wave manipulation.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Jahan Claes et al.
Summary: This paper discusses the non-Hermitian skin effect, extends the definition of the winding number to disordered NH systems, and verifies that the real-space formula can still predict the NH skin effect.
Article
Physics, Multidisciplinary
Dan S. Borgnia et al.
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
Nobuyuki Okuma et al.
PHYSICAL REVIEW LETTERS
(2020)
Article
Multidisciplinary Sciences
Sebastian Weidemann et al.
Article
Physics, Multidisciplinary
T. Helbig et al.
Article
Physics, Multidisciplinary
Huanan Li et al.
PHYSICAL REVIEW LETTERS
(2020)
Article
Optics
Sergey Lepeshov et al.
Article
Physics, Multidisciplinary
Kai Zhang et al.
PHYSICAL REVIEW LETTERS
(2020)
Article
Multidisciplinary Sciences
Alexander McDonald et al.
NATURE COMMUNICATIONS
(2020)
Article
Physics, Applied
Huanan Li et al.
PHYSICAL REVIEW APPLIED
(2020)
Review
Physics, Condensed Matter
Yuto Ashida et al.
ADVANCES IN PHYSICS
(2020)
Article
Physics, Multidisciplinary
Xueyi Zhu et al.
PHYSICAL REVIEW RESEARCH
(2020)
Article
Multidisciplinary Sciences
Ananya Ghatak et al.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Multidisciplinary Sciences
Linhu Li et al.
NATURE COMMUNICATIONS
(2020)
Article
Physics, Multidisciplinary
Jan Carl Budich et al.
PHYSICAL REVIEW LETTERS
(2020)
Review
Physics, Condensed Matter
Ananya Ghatak et al.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2019)
Review
Physics, Multidisciplinary
Tomoki Ozawa et al.
REVIEWS OF MODERN PHYSICS
(2019)
Review
Physics, Applied
Guancong Ma et al.
NATURE REVIEWS PHYSICS
(2019)
Article
Physics, Multidisciplinary
Stefano Longhi
ANNALEN DER PHYSIK
(2018)
Article
Physics, Multidisciplinary
Flore K. Kunst et al.
PHYSICAL REVIEW LETTERS
(2018)
Article
Physics, Multidisciplinary
Shunyu Yao et al.
PHYSICAL REVIEW LETTERS
(2018)
Article
Physics, Multidisciplinary
Shunyu Yao et al.
PHYSICAL REVIEW LETTERS
(2018)
Article
Physics, Multidisciplinary
Ye Xiong
JOURNAL OF PHYSICS COMMUNICATIONS
(2018)
Article
Materials Science, Multidisciplinary
V. M. Martinez Alvarez et al.
Article
Optics
Denis G. Baranov et al.
Editorial Material
Physics, Multidisciplinary
Sebastian D. Huber
Article
Multidisciplinary Sciences
Fei Gao et al.
NATURE COMMUNICATIONS
(2016)
Article
Multidisciplinary Sciences
Yu-Gui Peng et al.
NATURE COMMUNICATIONS
(2016)
Article
Multidisciplinary Sciences
Martin Wimmer et al.
NATURE COMMUNICATIONS
(2015)
Article
Multidisciplinary Sciences
Stefano Longhi et al.
SCIENTIFIC REPORTS
(2015)
Article
Physics, Multidisciplinary
G. Q. Liang et al.
PHYSICAL REVIEW LETTERS
(2013)
Article
Physics, Multidisciplinary
Xiao-Liang Qi et al.
REVIEWS OF MODERN PHYSICS
(2011)
Article
Physics, Multidisciplinary
M. Z. Hasan et al.
REVIEWS OF MODERN PHYSICS
(2010)
