Fluorimetry in the Strong-Coupling Regime: From a Fundamental Perspective to Engineering New Tools for Tracing and Marking Materials and Objects

Under exceptional circumstances, light and molecules bond together, creating new hybrid light–matter states with far-reaching consequences for these strongly coupled entities. The present article describes the quantum-mechanical foundation of strong-coupling experimental evidence molding radiation properties nanoprobes by strong-coupling. When applied to tracing marking, fluorometry technique proposed here, which harnesses strong-coupling, has a triple advantage compared its classical counterparts such as DNA tracing. It is fast, signal-to-noise ratio can be improved spectral filtering; moreover, it reveals specific quantum signature extremely difficult reproduce classically, thereby opening door anti-counterfeiting strategies.