"Quantum Optics in Photonic-Crystal Nanocavities"

Dr. Michal Bajcsy
Ginzton Laboratory, Stanford University


Photonic nano-structures can control the flow of photons in a way that was until recently impossible. Interactions of single quantum emitters with individual nano-photonic structures have been reported extensively over the last few years. Developing these proof-of-principle platforms into more complex, integrated, and practical devices that can be scaled into large architectures will require solving a host of challenging problems.

I will introduce our recent experiments with single, self-assembled InAs quantum dots embedded in GaAs photonic-crystal nanocavities. This coupled cavity-dot system enables interactions between single photons, which we have used to demonstrate high-speed alloptical switching at ultra-low powers and generation of non-classical light. The small size of the photonic-crystal cavities and their compatibility with semiconductor fabrication processes make the coupled cavity-dot platform an excellent candidate for scaling up to more complex systems needed for practical devices. As a first step toward a network of interacting nonlinear cavities, we demonstrated strong coupling of a single quantum dot to a pair of proximity-coupled cavities. Lastly, I will discuss our initial measurements of higher-order photon correlations in resonant light transmitted through a strongly coupled cavity-dot system.

Wednesday, April 17, 2013
IQSE 578, 12:30 noon
Mitchell Physics Building

Institute for Quantum Science and Engineering
Texas A&M University

(Pizza, salad, and soda to be served at 12:00 noon)

Host: Marlan Scully