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arXiv · 1606.05591

Strong light-matter coupling in the presence of lasing

Christopher Gies·Fabian Gericke·Paul Gartner·Steffen Holzinger·Caspar Hopfmann·Tobias Heindel·Janik Wolters·Christian Schneider·Matthias Florian·Frank Jahnke·Sven. Höfling·Martin Kamp·Stephan Reitzenstein
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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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Christopher Gies, Fabian Gericke, Paul Gartner, Steffen Holzinger, Caspar Hopfmann, Tobias Heindel, Janik Wolters, Christian Schneider, Matthias Florian, Frank Jahnke, Sven. Höfling, Martin Kamp, Stephan Reitzenstein. 2017-05-23. Strong light-matter coupling in the presence of lasing. https://doi.org/10.1103/physreva.96.023806

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