Probing different regimes of strong field light-matter interaction with semiconductor quantum dots and few cavity photons
MetadataShow full item record
In this work we present an extensive experimental and theoretical investigation of different regimes of strong field light-matter interaction for cavity-driven quantum dot-cavity systems. The electric field enhancement inside a high-Q micropillar cavity facilitates exceptionally strong interaction with few cavity photons, enabling the simultaneous investigation for a wide range of QD-laser detuning. In case of a resonant drive, the formation of dressed states and a Mollow triplet sideband splitting of up to 45 μeV is measured for a mean cavity photon number ⟨nc⟩ ≤ 1. In the asymptotic limit of the linear AC Stark effect we systematically investigate the power and detuning dependence of more than 400 QDs. Some QD-cavity systems exhibit an unexpected anomalous Stark shift, which can be explained by an extended dressed 4-level QD model. We provide a detailed analysis of the QD-cavity systems properties enabling this novel effect. The experimental results are successfully reproduced using a polaron master equation approach for the QD-cavity system, which includes the driving laser field, exciton-cavity and exciton-phonon interactions.
Hargart , F , Roy-Choudhury , K , John , T , Portalupi , S L , Schneider , C , Höfling , S , Kamp , M , Hughes , S & Michler , P 2016 , ' Probing different regimes of strong field light-matter interaction with semiconductor quantum dots and few cavity photons ' New Journal of Physics , vol. 18 , 123031 . https://doi.org/10.1088/1367-2630/aa5198
New Journal of Physics
This is an Open Access article. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
DescriptionWe acknowledge financial support of the Deutsche Forschungsgemeinschaft (DFG) within the SFB/TRR21 and the projects MI500/23-1 and Ka2318/4-1, the Natural Sciences and Engineering Research Council of Canada, and from the open access fund of the University of Stuttgart.
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.