Optically-gated resonant emission in single quantum dots Auteur(s): Nguyen Hai-Son, Sallen Gregory, Voisin Christophe, Roussignol Philippe, Diederichs Carole, Cassabois G. (Article) Publié: Physical Review Letters, vol. 108 p.057401 (2012) Texte intégral en Openaccess : Ref HAL: hal-00659994_v1 DOI: 10.1103/PhysRevLett.108.057401 WoS: 000299830500014 Exporter : BibTex | endNote 67 Citations Résumé: We report on the resonant emission in coherently-driven single semiconductor quantum dots. We demonstrate that an ultra-weak non-resonant laser acts as an optical gate for the quantum dot resonant response. We show that the gate laser suppresses Coulomb blockade at the origin of a resonant emission quenching, and that the optically-gated quantum dots systematically behave as ideal two-level systems in both regimes of coherent and incoherent resonant emission. |