Exciton photon strong-coupling regime for a single quantum dot in a microcavity.

Emmanuelle Peter (1) , Pascale Senellart (1) , David Martrou (1) , Aristide Lemaître (1) , Jacqueline Bloch (1) , Julien Hours (1) , Jean-Michel Gérard (2)

1 LPN - Laboratoire de photonique et de nanostructures
2 NPSC - Nanophysique et Semiconducteurs

We report on the observation of the strong coupling regime between a single GaAs quantum dot and a microdisk optical mode. Photoluminescence is performed at various temperatures to tune the quantum dot exciton with respect to the optical mode. At resonance, we observe an anticrossing, signature of the strong coupling regime with a well resolved doublet. The Vacuum Rabi splitting amounts to 400 μeV and is twice as large as the individual linewidths.

Mots clés: strong coupling regime; microcavity; quantum dot

Domaines: Physique Quantique [quant-ph]

Emmanuelle Peter, Pascale Senellart, David Martrou, Aristide Lemaître, Jacqueline Bloch, et al.. Exciton photon strong-coupling regime for a single quantum dot in a microcavity.. Physical Review Letters, 2005, 95, pp.067401. ⟨hal-00003254v3⟩