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arXiv · 1503.05595

Ultrafast polariton-phonon dynamics of strongly coupled quantum dot-nanocavity systems

Kai Müller·Kevin A. Fischer·Armand Rundquist·Constantin Dory·Konstantinos G. Lagoudakis·Tomas Sarmiento·Yousif A. Kelaita·Victoria Borish·Jelena Vučković
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Abstract

We investigate the influence of exciton-phonon coupling on the dynamics of a strongly coupled quantum dot-photonic crystal cavity system and explore the effects of this interaction on different schemes for non-classical light generation. By performing time-resolved measurements, we map out the detuning-dependent polariton lifetime and extract the spectrum of the polariton-to-phonon coupling with unprecedented precision. Photon-blockade experiments for different pulse-length and detuning conditions (supported by quantum optical simulations) reveal that achieving high-fidelity photon blockade requires an intricate understanding of the phonons' influence on the system dynamics. Finally, we achieve direct coherent control of the polariton states of a strongly coupled system and demonstrate that their efficient coupling to phonons can be exploited for novel concepts in high-fidelity single photon generation.

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Kai Müller, Kevin A. Fischer, Armand Rundquist, Constantin Dory, Konstantinos G. Lagoudakis, Tomas Sarmiento, Yousif A. Kelaita, Victoria Borish, Jelena Vučković. 2015-03-18. Ultrafast polariton-phonon dynamics of strongly coupled quantum dot-nanocavity systems. https://doi.org/10.1103/physrevx.5.031006

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