Polaritons from micro to nano scale

摘要: Strong coupling between light and matter is at the forefront of research both for the observation of new phenomenologies and the development of technologies based on interacting fluid of light. Here we show organic polaritons in different optical systems. First we see Bloch surface wave mode dressed with excitons showing ultrafast propagation of hundreds of microns at half the speed of light. Then we shift to polaritons in plasmonic systems demonstrating ultra strong coupled excitons of organic molecules with nanometer-scale plasmonic disks.Polaritons are among the most striking quasi-particles in semicondutors that can undergo phase transition to a Bose Einstein condensate state even at room temperature. The physics of these objects has shown several impressive achievements, from superfluidity [1], lasing at room temperature [2], solitons [1, 3, 2], black holes analog [4], optical switches [5], and many others …