Polaritons are hybrid excitations of matter and photons. In recent years, polaritons in van der
Waals nanomaterials—known as van der Waals polaritons—have shown great promise to …

Nanostructured surfaces with designed optical functionalities, such as metasurfaces, allow
efficient harvesting of light at the nanoscale, enhancing light–matter interactions for a wide …

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 …

Manipulating the properties of the isofrequency contours (IFCs) of materials provides a
powerful means of controlling the interaction between light and matter. Hyperbolic …

Phonon polaritons provide useful opportunities, complementary to those provided by
plasmon polaritons, in the study of the interaction of light with matter at small scales. The …

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

Polaritons–coupled excitations of photons and dipolar matter excitations–can propagate
along anisotropic metasurfaces with either hyperbolic or elliptical dispersion. At the …

Hexagonal boron nitride has been proposed as an excellent candidate to achieve
subwavelength infrared light manipulation owing to its polar lattice structure, enabling …

Recently, two rich and exciting research fields, layered two-dimensional (2D) materials and
metamaterials, have started overlapping. Metamaterials are artificial, engineered materials …

Light confinement in nanostructures produces an enhanced light–matter interaction that
enables a vast range of applications including single-photon sources, nanolasers and …