Room temperature organic exciton-polariton flow exploiting high-speed, high-Q propagating modes

摘要: Exciton-polaritons, bosonic quasi-particles formed by the interaction of light and matter, have shown a plethora exciting phenomena that been chiefly restricted to inorganic semiconductors low temperature operation. Only recently, polariton condensation non-linear effects demonstrated with polymers organic molecules, making these systems suited for realistic new generation all-optical devices. However, propagation in plane device, essential on-chip integration, is still limited very strong dissipation inherent present microcavities. Here, we demonstrate strong-coupling excitons Bloch surface wave (Q $\approx$ 3000) which sustains distances longer than 300 $\mu$m lifetimes about 1 ps, record value The group velocity mode found be 50% speed light, two order magnitude higher any planar microcavity.