title: Photon emission as a source of coherent behavior of polaritons.
abstract: We show that the combined effect of photon emission and Coulomb interactions may drive an exciton-polariton system towards a dynamical coherent state, even without phonon thermalization or any other relaxation mechanism. Exact diagonalization results for a finite system (a multilevel quantum dot interacting with the lowest-energy photon mode of a microcavity) are presented in support of this statement.
authors.affiliation: Instituto de Fisica, Universidad de Antioquia, AA 1226, Medellin, Colombia.
authors.forename: Herbert
authors.initials: H
authors.lastname: Vinck-Posada
authors.forename: Boris A
authors.initials: BA
authors.lastname: Rodriguez
authors.forename: P S S
authors.initials: PS
authors.lastname: Guimaraes
authors.forename: Alejandro
authors.initials: A
authors.lastname: Cabo
authors.forename: Augusto
authors.initials: A
authors.lastname: Gonzalez