Ultrafast optical switching in quantum dot-metallic nanoparticle hybrid systems.

Characterization of the ultrafast carrier dynamics of an InAs/InGaAsP quantum dot semiconductor optical amplifier operating at 1.55 μm

Self-assembled quantum dot (QD) Semiconductor Optical Amplifiers (SOAs) are believed to have faster carrier recovery times than conventional multiple quantum well, or bulk SOAs. It is therefore of interest to study the carrier dynamics of QD SOAs to assess their potential as ultrafast nonlinear devices for switching and signal processing. In this work we report experimental characterization of ...

Ultrafast Nonlinear Optical Response in GaN/AlN Quantum Dots for Optical Switching

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

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 weak pulsed beams (40 ps pulses). Our results show that the quantum dot-nanocavity system enables fast, controllable...

Ultrafast reversal of a Fano resonance in a plasmon-exciton system

When a two-level quantum dot and a plasmonic metal nanoantenna are resonantly coupled by the electromagnetic near-field, the system can exhibit a Fano resonance, resulting in a transparency dip in the optical spectrum of the coupled system. We calculate the nonlinear response of such a system, for illumination both by continuous-wave and ultrafast pulsed lasers, using both a cavity quantum elec...

Experimental observation of leaky modes and plasmons in a hybrid resonance element

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