Resonant excitonic emission of a single quantum dot in the Rabi regime

Details Resonant excitonic emission of a single quantum dot in the Rabi regime Resonant excitonic emission of a single quantum dot in the Rabi regime

2007-07-20

arxiv.org/abs/0707.3061v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevB.78.073301

We report on coherent resonant emission of the fundamental exciton state in a single semiconductor GaAs quantum dot. Resonant regime with picoseconde laser excitation is realized by embedding the quantum dots in a waveguiding structure. As the pulse intensity is increased, Rabi oscillation is observed up to three periods. The Rabi regime is achieved owing to an enhanced light-matter coupling in the waveguide. This is due to a \emph{slow light effect} ($c/v_{g}\simeq 3000$), occuring when an intense resonant pulse propagates in a medium. The resonant control of the quantum dot fundamental transition opens new possibilities in quantum state manipulation and quantum optics experiments in condensed matter physics.

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