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arXiv · 1210.0935

Detuning-Dependent Mollow Triplet of a Coherently-Driven Single Quantum Dot

Ata Ulhaq·Stefanie Weiler·Chiranjeeb Roy·Sven Marcus Ulrich·Michael Jetter·Stephen Hughes·Peter Michler
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Abstract

We present both experimental and theoretical investigations of a laser-driven quantum dot (QD) in the dressed-state regime of resonance fluorescence. We explore the role of phonon scattering and pure dephasing on the detuning-dependence of the Mollow triplet and show that the triplet sidebands may spectrally broaden or narrow with increasing detuning. Based on a polaron master equation approach which includes electron-phonon interaction nonperturbatively, we derive a fully analytical expression for the spectrum. With respect to detuning dependence, we identify a crossover between the regimes of spectral sideband narrowing or broadening. A comparison of the theoretical predictions to detailed experimental studies on the laser detuning-dependence of Mollow triplet resonance emission from single In(Ga)As QDs reveals excellent agreement.

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Ata Ulhaq, Stefanie Weiler, Chiranjeeb Roy, Sven Marcus Ulrich, Michael Jetter, Stephen Hughes, Peter Michler. 2012-10-02. Detuning-Dependent Mollow Triplet of a Coherently-Driven Single Quantum Dot. https://doi.org/10.1364/oe.21.004382

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