Complete Coherent Control of a Quantum Dot Strongly Coupled to a Nanocavity

Strongly coupled quantum dot-cavity systems provide a non-linear configuration of hybridized light-matter states with promising quantum-optical applications. Here, we investigate the coherent interaction between strong laser pulses and quantum dot-cavity polaritons. Resonant excitation of polaritoni...

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Published inScientific reports Vol. 6; no. 1; p. 25172
Main Authors Dory, Constantin, Fischer, Kevin A, Müller, Kai, Lagoudakis, Konstantinos G, Sarmiento, Tomas, Rundquist, Armand, Zhang, Jingyuan L, Kelaita, Yousif, Vučković, Jelena
Format Journal Article
LanguageEnglish
Published England Nature Publishing Group 26.04.2016
Subjects
Hybridization
Oscillations
Quantum dots
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Summary:Strongly coupled quantum dot-cavity systems provide a non-linear configuration of hybridized light-matter states with promising quantum-optical applications. Here, we investigate the coherent interaction between strong laser pulses and quantum dot-cavity polaritons. Resonant excitation of polaritonic states and their interaction with phonons allow us to observe coherent Rabi oscillations and Ramsey fringes. Furthermore, we demonstrate complete coherent control of a quantum dot-photonic crystal cavity based quantum-bit. By controlling the excitation power and phase in a two-pulse excitation scheme we achieve access to the full Bloch sphere. Quantum-optical simulations are in good agreement with our experiments and provide insight into the decoherence mechanisms.
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These authors contributed equally to this work.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep25172