TY - JOUR
T1 - Cavity-enhanced simultaneous dressing of quantum dot exciton and biexciton states
AU - Hargart, Fabian
AU - Müller, Markus
AU - Roy-Choudhury, Kaushik
AU - Portalupi, Simone Luca
AU - Schneider, Christian
AU - Höfling, Sven
AU - Kamp, Martin
AU - Hughes, Stephen
AU - Michler, Peter
N1 - 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.
PY - 2016/3/15
Y1 - 2016/3/15
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevB.93.115308
DO - 10.1103/PhysRevB.93.115308
M3 - Article
SN - 1098-0121
VL - 93
JO - Physical Review. B, Condensed matter and materials physics
JF - Physical Review. B, Condensed matter and materials physics
IS - 11
M1 - 115308
ER -