Absorptive and dispersive optical responses of excitons in a single quantum dot

Benito Alén, Alexander Högele, Martin Kroner, Stefan Seidl, Khaled Karrai, Richard J. Warburton, Antonio Badolato, Gilberto Medeiros-Ribeiro, Pierre M. Petroff

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The authors have determined both the real and imaginary parts of the dielectric polarizability of a single quantum dot. The experiment is based on the observation and the manipulation of Rayleigh scattering at photon frequencies near the resonance of an optical exciton transition in single self-assembled InAs and InGaAs quantum dots. The interference between the narrow-band laser field and the weak electromagnetic field coherently scattered by the quantum dot is detected with a cryogenic Fabry-Pérot setup by combined differential transmission and reflectivity measurements. © 2006 American Institute of Physics.

Original languageEnglish
Article number123124
JournalApplied Physics Letters
Issue number12
Publication statusPublished - 2006

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