title: Superradiant terahertz emission by dipolaritons.
abstract: Dipolaritons are mixed light-matter quasiparticles formed in double quantum wells embedded in microcavities. Because of resonant coupling between direct and indirect excitons via electronic tunneling, 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 a classical Hertz dipole array which generate supperradiant emission on a terahertz (THz) frequency. The resulting THz signal may be enhanced using the supplementary THz cavity in the weak coupling regime.
authors.affiliation: Science Institute, University of Iceland, Dunhagi-3, IS-107 Reykjavik, Iceland and Division of Physics and Applied Physics, Nanyang Technological University, 637371 Singapore.
authors.forename: O
authors.initials: O
authors.lastname: Kyriienko
authors.forename: A V
authors.initials: AV
authors.lastname: Kavokin
authors.forename: I A
authors.initials: IA
authors.lastname: Shelykh