Coherent dynamics and parametric instabilities of microcavity polaritons in double-well systems

Year: 2008

Authors: Sarchi D., Carusotto I., Wouters M., Savona V.

Autors Affiliation: Institute of Theoretical Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland;
BEC-CNR-INFM and Dipartimento di Fisica, Università di Trento, I-38050 Povo, Italy;
TFVS, Universiteit Antwerpen, Groenenborgerlaan 171, 2020 Antwerpen, Belgium

Abstract: We investigate the physics of coherent polaritons in a double-well configuration under a resonant pumping. For a continuous-wave pump, bistability and self-pulsing regimes are identified as a function of the pump energy and intensity. The response to an additional probe pulse is characterized in the different cases and related to the Bogoliubov modes around the stationary state. Under a pulsed pump, a crossover from Josephson-like oscillations to self-trapping is predicted for increasing pump intensity. The accurateness of the effective two-mode model is assessed by comparing its predictions to a full solution of the nonequilibrium Gross-Pitaevskii equation.


Volume: 77 (12)      Pages from: 125324  to: 125324

KeyWords: exciton-polaritons; Josephson oscillations; parametric instabilities
DOI: 10.1103/PhysRevB.77.125324

Citations: 90
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