Cavity-enhanced simultaneous dressing of quantum dot exciton and biexciton states
Abstract
We demonstrate the simultaneous dressing of both vacuum-to-exciton and exciton-to-biexciton transitions of a single semiconductor quantum dot in a high-Q micropillar cavity, using photoluminescence spectroscopy. Resonant two-photon excitation of the biexciton is achieved by spectrally tuning the quantum dot emission with respect to the cavity mode. The cavity couples to both transitions and amplifies the Rabi-frequency of the likewise resonant cw laser, driving the transitions. We observe strong-field splitting of the emission lines, which depend on the driving Rabi field amplitude and the cavity-laser detuning. A dressed state theory of a driven 4-level atom correctly predicts the distinct spectral transitions observed in the emission spectrum, and a detailed description of the emission spectra is further provided through a polaron master equation approach which accounts for cavity coupling and acoustic phonon interactions of the semiconductor medium.
Citation
Hargart , F , Müller , M , Roy-Choudhury , K , Portalupi , S L , Schneider , C , Höfling , S , Kamp , M , Hughes , S & Michler , P 2016 , ' Cavity-enhanced simultaneous dressing of quantum dot exciton and biexciton states ' , Physical Review. B, Condensed matter and materials physics , vol. 93 , no. 11 , 115308 . https://doi.org/10.1103/PhysRevB.93.115308
Publication
Physical Review. B, Condensed matter and materials physics
Status
Peer reviewed
ISSN
1098-0121Type
Journal article
Description
The authors acknowledge financial support of the Deutsche Forschungsgemeinschaft (DFG) within the SFB/TRR21 and the projects MI500/23-1 and Ka2318/4-1, and the Natural Sciences and Engineering Research Council of Canada.Collections
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