Wavelength-scale optical micro cavities

by Jeff Young, UBC
Thursday, 8 March 2018 - 2:45 pm
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Contact person: 
Pawel Hawrylak
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Free of charge
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Speaker: Jeff Young, Department of Physics and Quantum Matter Institute, University of British Columbia

Title:  Wavelength-scale optical micro cavities: how they work, how they are made, and example applications from single particle sensing to quantum optics.

Abstract:  Advanced microfabrication technologies enable the creation of planar optical circuits in which the flow of light can be manipulated through a network of components with dimensions on the order of the optical wavelength.  Many of the novel functionalities this technology offers are based on the enhancement of the effective strength of interaction between the guided light/photons, and the materials contained within the optical circuit elements. This talk describes planar optical circuit technology and offers an intuitive guide to understand how the light-matter interaction strength can be enhanced by several orders of magnitude using embedded microcavities that confine light in 3 dimensions to volumes on order the cubic wavelength, for times that can reach over a million optical cycles.  Example applications will be described, including; optical trapping and characterization of single nanoparticles, single photon infrared detectors with near unity quantum efficiency, and work towards realizing single photon sources in silicon-based optical circuits.