Topological metamaterials

X Ni, S Yves, A Krasnok, A Alu - Chemical Reviews, 2023 - ACS Publications
The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

Discrete nonlinear topological photonics

A Szameit, MC Rechtsman - Nature Physics, 2024 - nature.com
Topological materials, whether in solid state, photonic or acoustic systems, or other
domains, are characterized by bulk topological invariants that remain unchanged as long as …

Non-reciprocal topological solitons in active metamaterials

J Veenstra, O Gamayun, X Guo, A Sarvi, CV Meinersen… - Nature, 2024 - nature.com
From protein motifs to black holes, topological solitons are pervasive nonlinear excitations
that are robust and can be driven by external fields. So far, existing driving mechanisms all …

Topological valley Hall polariton condensation

K Peng, W Li, M Sun, JDH Rivero, C Ti, X Han… - Nature …, 2024 - nature.com
A photonic topological insulator features robust directional propagation and immunity to
defect perturbations of the edge/surface state. Exciton-polaritons, that is, the hybrid …

N-soliton, Mth-order breather, Hth-order lump, and hybrid solutions of an extended (3+1)-dimensional Kadomtsev-Petviashvili equation

Y Shen, B Tian, CD Cheng, TY Zhou - Nonlinear Dynamics, 2023 - Springer
Investigated in this paper is an extended (3+ 1)-dimensional Kadomtsev-Petviashvili
equation. We determine the N-soliton solutions of that equation via an existing bilinear form …

Realization of photonic p-orbital higher-order topological insulators

Y Zhang, D Bongiovanni, Z Wang, X Wang, S ** of solitons in nonlinear photonics and ultracold atomic mixtures
N Mostaan, F Grusdt, N Goldman - nature communications, 2022 - nature.com
Exploring the interplay between topological band structures and tunable nonlinearities has
become possible with the development of synthetic lattice systems. In this emerging field of …

Exciton polaritons in emergent two-dimensional semiconductors

H Kang, J Ma, J Li, X Zhang, X Liu - ACS nano, 2023 - ACS Publications
The “marriage” of light (ie, photon) and matter (ie, exciton) in semiconductors leads to the
formation of hybrid quasiparticles called exciton polaritons with fascinating quantum …

Observation of π solitons in oscillating waveguide arrays

AA Arkhipova, Y Zhang, YV Kartashov, SA Zhuravitskii… - Science Bulletin, 2023 - Elsevier
Floquet systems with periodically varying in time parameters enable realization of
unconventional topological phases that do not exist in static systems with constant …