Polaritons, originating from the interactions between photons and material excitations, have
attracted attention because of their strong field compression and deeply subdiffractional …

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 …

Photonic crystals (PhCs) are a kind of artificial structures that can mold the flow of light at
will. Polaritonic crystals (PoCs) made from polaritonic media offer a promising route to …

Control over charge carrier density provides an efficient way to trigger phase transitions and
modulate the optoelectronic properties of materials. This approach can also be used to …

Abstract 2D monolayers supporting a wide variety of highly confined plasmons, phonon
polaritons, and exciton polaritons can be vertically stacked in van der Waals …

Polaritons in polar biaxial crystals with extreme anisotropy offer a promising route to
manipulate nanoscale light–matter interactions. The dynamic modulation of their dispersion …

Polaritons in hyperbolic van der Waals materials—where principal axes have permittivities
of opposite signs—are light-matter modes with unique properties and promising …

Phonon polaritons (PhPs)─ lattice vibrations coupled to electromagnetic fields─ in highly
anisotropic media display a plethora of intriguing optical phenomena, including ray-like …

Advanced control over the excitation of ultraconfined polaritons—hybrid light and matter
waves—empowers unique opportunities for many nanophotonic functionalities, eg, on-chip …

Extreme anisotropy in some polaritonic materials enables light propagation with a
hyperbolic dispersion, leading to enhanced light-matter interactions and directional …