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 …

Polaritons are a hybrid class of quasiparticles originating from the strong and resonant
coupling between light and matter excitations. Recent years have witnessed a surge of …

Abstract Epsilon‐near‐zero (ENZ) materials, exhibiting unique physical characteristics such
as near‐zero refraction, have aroused extensive interest and exhibit great potentials in novel …

Narrow bandwidths are a general bottleneck for applications relying on passive, linear,
subwavelength resonators. In the past decades, several efforts have been devoted to …

In this brief review, we summarize and elaborate on some of the nomenclature of polaritonic
phenomena and systems as they appear in the literature on quantum materials and …

Polaritons are well-established carriers of light, electrical signals, and even heat at the
nanoscale in the setting of on-chip devices. However, the goal of achieving practical …

While near-field infrared nanospectroscopy provides a powerful tool for nanoscale material
characterization, broadband nanospectroscopy of elementary material excitations in the …

Polariton pulses—transient light-matter hybrid excitations—traveling through anisotropic
media can lead to unusual optical phenomena in space and time. However, studying these …

Modulating anisotropic phonon polaritons (PhPs) can open new avenues in infrared
nanophotonics. Promising PhP dispersion engineering through polariton hybridization has …

In conventional thin materials, the diffraction limit of light constrains the number of
waveguide modes that can exist at a given frequency. However, layered van der Waals …