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Microcavity enhanced single photon emission from an electrically driven site-controlled quantum dot

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8 Author(s)
Schneider, C. ; Technische Physik, Physikalisches Institut and Wilhelm Conrad Röntgen-Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany ; Heindel, T. ; Huggenberger, A. ; Niederstrasser, T.A.
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In this work we report on the integration of single site-controlled quantum dots (SCQDs) into electrically driven micropillar cavities. The electroluminescence of these devices features emission of single SCQDs with inhomogeneous broadenings down to 170 µeV. The enhancement of electroluminescence by quantum dot-cavity coupling is demonstrated by temperature dependent investigations. Single photon emission from a spatially and spectrally coupled SCQD-resonator system is confirmed by photon autocorrelation measurements under electrical excitation yielding a g(2)(0) value of 0.42.

Published in:

Applied Physics Letters  (Volume:100 ,  Issue: 9 )

Date of Publication:

Feb 2012

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