Ultrafast photon-photon interaction in a strongly coupled quantum dot-cavity system

Details Ultrafast photon-photon interaction in a strongly coupled quantum dot-cavity system Ultrafast photon-photon interaction in a strongly coupled quantum dot-cavity system

2011-07-14

arxiv.org/abs/1107.2956v1

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.108.093604

We study dynamics of the interaction between two weak light beams mediated by a strongly coupled quantum dot-photonic crystal cavity system. First, we perform all optical switching of a weak continuous-wave signal with a pulsed control beam, and then perform switching between two pulsed beams (40ps pulses) at the single photon level. Our results show that the quantum dot-nanocavity system creates strong, controllable interactions at the single photon level.

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