Strong light-matter coupling in the presence of lasing

C. Gies, F. Gericke, P. Gartner, S. Holzinger, C. Hopfmann, T. Heindel, J. Wolters, C. Schneider, M. Florian, F. Jahnke, S. Höfling, M. Kamp, and S. Reitzenstein
Phys. Rev. A 96, 023806 – Published 3 August 2017

Abstract

The regime of strong light-matter coupling is typically associated with weak excitation. With current realizations of cavity-QED systems, strong coupling may persevere even at elevated excitation levels sufficient to cross the threshold to lasing. In the presence of stimulated emission, the vacuum-Rabi doublet in the emission spectrum is modified and the established criterion for strong coupling no longer applies. We provide a generalized criterion for strong coupling and the corresponding emission spectrum, which includes the influence of higher Jaynes-Cummings states. The applicability is demonstrated in a theory-experiment comparison of a few-emitter quantum-dot–micropillar laser as a particular realization of the driven dissipative Jaynes-Cummings model. Furthermore, we address the question if and for which parameters true single-emitter lasing can be achieved and provide evidence for the coexistence of strong coupling and lasing in our system in the presence of background emitter contributions.

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  • Received 17 June 2016

DOI:https://doi.org/10.1103/PhysRevA.96.023806

©2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsAtomic, Molecular & Optical

Authors & Affiliations

C. Gies1,*, F. Gericke2, P. Gartner3, S. Holzinger2, C. Hopfmann2, T. Heindel2, J. Wolters2, C. Schneider4, M. Florian1, F. Jahnke1, S. Höfling4,5, M. Kamp4, and S. Reitzenstein2

  • 1Institut für Theoretische Physik, Universität Bremen, 28334 Bremen, Germany
  • 2Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
  • 3National Institute of Materials Physics, P.O. Box MG-7, Bucharest-Magurele, Romania
  • 4Technische Physik, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
  • 5SUPA, School of Physics and Astronomy, University of St. Andrews, St. Andrews KY16 9SS, United Kingdom

  • *gies@itp.uni-bremen.de

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Vol. 96, Iss. 2 — August 2017

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