The interaction between molecular electronic transitions and electromagnetic fields can be
enlarged to the point where distinct hybrid light–matter states, polaritons, emerge. The …

The coherent exchange of energy between materials and optical fields leads to strong light–
matter interactions and so-called polaritonic states with intriguing properties, halfway …

Chemical manifestations of strong light–matter coupling have recently been a subject of
intense experimental and theoretical studies. Here we review the present status of this field …

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 …

Abstract The study of Bose–Einstein condensation effects in photonic systems has revealed
a rich phenomenology related to spontaneous coherence generation in driven-dissipative …

Molecular polaritons result from light-matter coupling between optical resonances and
molecular electronic or vibrational transitions. When the coupling is strong enough, new …

Exciton-polaritons are hybrid states formed when molecular excitons are strongly coupled to
photons trapped in an optical cavity. These systems exhibit many interesting, but not fully …

While there have been numerous reports of long‐range polariton transport at room‐
temperature in organic cavities, the spatiotemporal evolution of the propagation is scarcely …

Photochemical upconversion is a process whereby two lower-energy photons are converted
into a higher-energy photon by sensitized triplet–triplet annihilation. While recent interest in …

Research into strong light–matter interactions continues to fascinate, being spurred on by
unforeseen and often spectacular experimental observations. Properties that were …