Mathematics Department Técnico Técnico

Quantum Computation and Information Seminar  RSS


10/07/2015, 10:00 — 11:30 — Room P3.10, Mathematics Building
, Wuerzburg University and University of St Andrews

Exciton-polariton condensates

Semiconductor diode lasers play a major role in everyday life in our information society. These lasers generate coherent light by stimulated emission of photons. In contrast, laser-like operation can be obtained also by stimulated scattering of bosonic quasiparticles called exciton-polaritons into the ground state of strongly coupled light-matter systems in microcavities. This polariton laser or dynamic and non-equilibrium polariton condensate regime can be reached with pump thresholds lower than conventional lasing. The exciton-polaritons decay by the leakage of photons from a cavity, which produces a monochromatic and coherent light output. In this talk, we discuss the electrical injection of exciton-polaritons into microcavity structures and the formation of exciton-polariton condensates in lattice structures with deep and tailorable confinement potential.

Supported by: Phys-Info (IT), SQIG (IT), CeFEMA and CAMGSD, with funding from FCT, FEDER and EU FP7, specifically through the Doctoral Programme in the Physics and Mathematics of Information (DP-PMI), FCT strategic projects PEst-OE/EEI/LA0008/2013 and UID/EEA/50008/2013, IT project QuSim, project CRUP-CPU CQVibes, the FP7 Coordination Action QUTE-EUROPE (600788), and the FP7 projects Landauer (GA 318287) and PAPETS (323901).


Instituto de TelecomunicaçõesCAMGSDFCT7th Framework Programme