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Journal of Applied Physics / Volume 109 / Issue 10 / SPECIAL TOPIC: PLENARY AND INVITED PAPERS FROM THE 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, SEOUL, KOREA, 2010

J. Appl. Phys. 109, 102404 (2011); http://dx.doi.org/10.1063/1.3576137 (5 pages)

Nonresonant feeding of photonic crystal nanocavity modes by quantum dots

A. Laucht, N. Hauke, A. Neumann, T. Günthner, F. Hofbauer, A. Mohtashami, K. Müller, G. Böhm, M. Bichler, M.-C. Amann, M. Kaniber, and J. J. Finley

Walter Schottky Institut, Technische Universität München, Am Coulombwall 3, 85748 Garching, Germany

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(Received 18 July 2010; accepted 9 October 2010; published online 31 May 2011)

We experimentally probe the nonresonant feeding of photons into the optical mode of a two dimensional photonic crystal nanocavity from the discrete emission from a quantum dot. For a strongly coupled system of a single exciton and the cavity mode, we track the detuning-dependent photoluminescence intensity of the exciton-polariton peaks at different lattice temperatures. At low temperatures we observe a clear asymmetry in the emission intensity depending on whether the exciton is at higher or lower energy than the cavity mode. At high temperatures this asymmetry vanishes when the probabilities to emit or absorb a phonon become similar. For a different dot-cavity system where the cavity mode is detuned by ΔE>5 meV to lower energy than the single exciton transitions emission from the mode remains correlated with the quantum dot as demonstrated unambiguously by cross-correlation photon counting experiments. By monitoring the temporal evolution of the photoluminescence spectrum, we show that feeding of photons into the mode occurs from multi-exciton transitions. We observe a clear anti-correlation of the mode and single exciton emission; the mode emission quenches as the population in the system reduces toward the single exciton level while the intensity of the mode emission tracks the multi-exciton transitions.

© 2011 American Institute of Physics

Article Outline

  1. INTRODUCTION

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KEYWORDS and PACS

Keywords

excitons, gallium arsenide, III-V semiconductors, indium compounds, nanophotonics, optical resonators, photoluminescence, photon counting, photonic crystals, polaritons, quantum dots, semiconductor quantum dots

PACS

  • 42.70.Qs

    Photonic bandgap materials

  • 78.67.Hc

    Quantum dots

  • 71.35.-y

    Excitons and related phenomena

  • 71.36.+c

    Polaritons (including photon-phonon and photon-magnon interactions)

  • 78.55.Cr

    III-V semiconductors

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3576137

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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    A. Laucht, N. Hauke, J. M. Villas-Bôas, F. Hofbauer, G. Böhm, M. Kaniber, and J. J. Finley, “Dephasing of exciton polaritons in photoexcited in gaas quantum dots in gaas nanocavities,” Phys. Rev. Lett. 103, 087405 (2009).

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    M. Kaniber, A. Laucht, T. Hürlimann, M. Bichler, R. Meyer, M.-C. Amann, and J. J. Finley, Phys. Rev. B 77, 073312 (2008).


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