Giant photon bunching, superradiant pulse emission and excitation trapping in quantum-dot nanolasers

Frank Jahnke (), Christopher Gies, Marc Aßmann, Manfred Bayer (), H. A. M. Leymann, Alexander Foerster, Jan Wiersig, Christian Schneider, Martin Kamp and Sven Höfling
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Frank Jahnke: Institute for Theoretical Physics, University of Bremen
Christopher Gies: Institute for Theoretical Physics, University of Bremen
Marc Aßmann: Experimentelle Physik II, Technische Universität Dortmund
Manfred Bayer: Experimentelle Physik II, Technische Universität Dortmund
H. A. M. Leymann: Institute for Theoretical Physics, Otto-von-Guericke University of Magdeburg
Alexander Foerster: Institute for Theoretical Physics, Otto-von-Guericke University of Magdeburg
Jan Wiersig: Institute for Theoretical Physics, Otto-von-Guericke University of Magdeburg
Christian Schneider: Technische Physik, University of Würzburg
Martin Kamp: Technische Physik, University of Würzburg
Sven Höfling: Technische Physik, University of Würzburg

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: Abstract Light is often characterized only by its classical properties, like intensity or coherence. When looking at its quantum properties, described by photon correlations, new information about the state of the matter generating the radiation can be revealed. In particular the difference between independent and entangled emitters, which is at the heart of quantum mechanics, can be made visible in the photon statistics of the emitted light. The well-studied phenomenon of superradiance occurs when quantum–mechanical correlations between the emitters are present. Notwithstanding, superradiance was previously demonstrated only in terms of classical light properties. Here, we provide the missing link between quantum correlations of the active material and photon correlations in the emitted radiation. We use the superradiance of quantum dots in a cavity-quantum electrodynamics laser to show a direct connection between superradiant pulse emission and distinctive changes in the photon correlation function. This directly demonstrates the importance of quantum–mechanical correlations and their transfer between carriers and photons in novel optoelectronic devices.

Date: 2016
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DOI: 10.1038/ncomms11540

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