Mathematics Department Técnico Técnico

Quantum Computation and Information Seminar  RSS


09/03/2015, 10:00 — 11:00 — Room P3.10, Mathematics Building
, Institute for Theoretical Physics, University of Innsbruck

Strong coupling in quantum optics: exciton-polaritons and phonon-polaritons

Strong coupling in quantum mechanical systems occurs when the strength of the coupling is much larger than losses. Such a feature can be found in optical cavities, where the atoms strongly couple to the cavity photonic modes (cavity QED). The same occurs in semi-conductor microcavities, where excitons strongly couple to photons. In these systems, the resulting quasi-particle, the so-called polariton, results from the hybridisation of a typical excitation with photons. In this talk, I will discuss two examples involving ultracold atoms where strong coupling involves a phonon mode, giving rise to an acoustic-like quasi-particle: the phonon-polariton. Some relations with the research in the domain of exciton-polaritons and its applications will be drawn.

Please note exceptional day.

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