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Conference on Lasers and Electro-Optics

Nonlinear optics near the single photon level with quantum dots

Edo Waks A, Deepak Sridharan, Ranojoy Bose, Hyochul Kim, Glenn S. Solomon

Published Jan 1, 2011• 0 citations
Publisher

Abstract

We describe our work on engineering nonlinear optical devices using quantum dots coupled to optical resonators. These systems enable large optical Stark shifts and all optical switching with only a few photons.
DOI
10.1364/qels.2011.qthg3

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A single two-level system constitutes an extremely non-linear optical medium, where the interaction with a first single photon modifies the transmission probability for a second photon. The main difficulty to implement a single photon switch using this property is to ensure that a gate single photon will interact with the quantum emitter with a near-unity probability. In the solid state, all-optical switching has been demonstrated using photonic crystals or microdisks coupled to quantum dots, but these systems were not well externally matched: hundreds of incident photons were thus required to trigger the optical nonlinearity.