Phys.org  March 2, 2023 How tightly the light is confined determines the limits for the observability of nanoparticles, as well as the intensity and the precision of light-based devices. An international team of researchers (UK, Germany) has developed a general theory describing multi-mode light–matter coupling in systems of reduced dimensionality. The researchers explored their phenomenology, validating their theory’s predictions against numerical electromagnetic simulations. They characterized the spectral features linked with the multi-mode nature of the polaritons and showed how the interference between different photonic resonances can modify the real-space shape of the electromagnetic field associated with each polariton mode. According […]