Advances and prospects in topological nanoparticle photonics

MS Rider, Á Buendía, DR Abujetas, PA Huidobro… - ACS …, 2022 - ACS Publications
Topological nanophotonics is a new avenue for exploring nanoscale systems from visible to
THz frequencies, with unprecedented control. By embracing their complexity and fully …

[HTML][HTML] Higher-order topology in plasmonic Kagome lattices

M Proctor, M Blanco de Paz, D Bercioux… - Applied Physics …, 2021 - pubs.aip.org
We study the topological properties of a Kagome plasmonic metasurface, modeled with a
coupled dipole method that naturally includes retarded long range interactions. We …

Exploiting oriented field projectors to open topological gaps in plasmonic nanoparticle arrays

Á Buendía, JA Sánchez-Gil, V Giannini - ACS photonics, 2023 - ACS Publications
In the last years there have been multiple proposals in nanophotonics to mimic topological
condensed matter systems. However, nanoparticles have degrees of freedom that atoms …

[HTML][HTML] Dual-band higher-order topological states and four-wave mixing in plasmonic valley-Hall metasurfaces

KK Om, KH Kim - Physics Letters A, 2023 - Elsevier
Higher-order topological states in plasmonic metasurfaces are of great importance in
practice for their tight confinements and high field enhancements, providing many promising …

Classifying topology in photonic crystal slabs with radiative environments

S Wong, TA Loring, A Cerjan - npj Nanophotonics, 2024 - nature.com
In the recent years, photonic Chern materials have attracted substantial interest as they
feature topological edge states that are robust against disorder, promising to realize defect …

Breakdown of spin-to-helicity locking at the nanoscale in topological photonic crystal edge states

S Arora, T Bauer, N Parappurath, R Barczyk… - Physical Review Letters, 2022 - APS
We measure the local near-field spin in topological edge state waveguides that emulate the
quantum spin Hall effect. We reveal a highly structured spin density distribution that is not …

Chiral topological surface states on a finite square photonic crystal bounded by air

AC Tasolamprou, M Kafesaki, CM Soukoulis… - Physical Review …, 2021 - APS
Chiral, topologically protected, photonic surface states can be found at the boundary
between gyrotropic photonic crystals where a changing magnetic field induces different …

Topological robust corner states of a two-dimensional square lattice with C4 symmetry in fully coupled dipolar arrays

C Luo, HC Li, Y Shen, XH Deng - Europhysics Letters, 2023 - iopscience.iop.org
A profound insight into topological photonic systems will empower us to harness their
maximum potential and discover uncharted topological phenomena. For the square …

Fast decomposed method to devise broadband polarization-conversion metasurface

X Xiao, J Lu, F Alzaabi, M Almheiri, V Giannini… - Scientific reports, 2023 - nature.com
Designing a broadband, wide-angle, and high-efficient polarization converter with a simple
geometry remains challenging. This work proposes a simple and computationally …

Exciting topological edge states by using plane waves in valley-Hall photonic crystal slabs

KH Kim, KK Om - Optics Communications, 2024 - Elsevier
Topological edge states are commonly excited by dipole sources or waveguide couplers. In
practice, however, such near-field excitations are unfavorable and the simplest way is to use …