Bound states in the continuum

CW Hsu, B Zhen, AD Stone, JD Joannopoulos… - Nature Reviews …, 2016 - nature.com
Bound states in the continuum (BICs) are waves that remain localized even though they
coexist with a continuous spectrum of radiating waves that can carry energy away. Their very …

Artificial flat band systems: from lattice models to experiments

D Leykam, A Andreanov, S Flach - Advances in Physics: X, 2018 - Taylor & Francis
Certain lattice wave systems in translationally invariant settings have one or more spectral
bands that are strictly flat or independent of momentum in the tight binding approximation …

Scale-free ferroelectricity induced by flat phonon bands in HfO2

HJ Lee, M Lee, K Lee, J Jo, H Yang, Y Kim, SC Chae… - Science, 2020 - science.org
Discovery of robust yet reversibly switchable electric dipoles at reduced dimensions is
critical to the advancement of nanoelectronics devices. Energy bands flat in momentum …

Corner states of light in photonic waveguides

A El Hassan, FK Kunst, A Moritz, G Andler… - Nature …, 2019 - nature.com
The recently established paradigm of higher-order topological states of matter has shown
that not only edge and surface states, but also states localized to corners, can have robust …

Photonic flatband resonances for free-electron radiation

Y Yang, C Roques-Carmes, SE Kooi, H Tang, J Beroz… - Nature, 2023 - nature.com
Flatbands have become a cornerstone of contemporary condensed-matter physics and
photonics. In electronics, flatbands entail comparable energy bandwidth and Coulomb …

Symmetry and higher-order exceptional points

I Mandal, EJ Bergholtz - Physical review letters, 2021 - APS
Exceptional points (EPs), at which both eigenvalues and eigenvectors coalesce, are
ubiquitous and unique features of non-Hermitian systems. Second-order EPs are by far the …

Reconfigurable moiré nanolaser arrays with phase synchronization

HY Luan, YH Ouyang, ZW Zhao, WZ Mao, RM Ma - Nature, 2023 - nature.com
Reconfigurable moiré nanolaser arrays with phase synchronization | Nature Skip to main
content Thank you for visiting nature.com. You are using a browser version with limited support …

Experimental observation of anomalous topological edge modes in a slowly driven photonic lattice

S Mukherjee, A Spracklen, M Valiente… - Nature …, 2017 - nature.com
Topological quantum matter can be realized by subjecting engineered systems to time-
periodic modulations. In analogy with static systems, periodically driven quantum matter can …

Experimental realization and characterization of an electronic Lieb lattice

MR Slot, TS Gardenier, PH Jacobse, GCP Van Miert… - Nature physics, 2017 - nature.com
Geometry, whether on the atomic or nanoscale, is a key factor for the electronic band
structure of materials. Some specific geometries give rise to novel and potentially useful …

Exotic topological bands and quantum states in metal–organic and covalent–organic frameworks

W Jiang, X Ni, F Liu - Accounts of Chemical Research, 2021 - ACS Publications
Conspectus Metal–organic and covalent–organic frameworks (MOFs/COFs) have been
extensively studied for fundamental interests and their promising applications, taking …