  Dipolaritons are mixed light-matter quasiparticles formed in double quantum
wells embedded in microcavities. Due to resonant coupling between direct and
indirect excitons via electronic tunnelling, dipolaritons possess large dipole
moments. Resonant excitation of the cavity mode by a short pulse of light
induces oscillations of the indirect exciton density with a characteristic
frequency of Rabi flopping. This results in oscillations of classical Hertz
dipoles array which generate supperradiant emission on a terahertz (THz)
frequency. Resulting THz signal may be enhanced using the supplementary THz
cavity in the weak coupling regime.
