Department of Physics, Engineering Physics & Astronomy

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Department of Physics, Engineering Physics & Astronomy
Department of Physics, Engineering Physics & Astronomy

Applications of Photonic Crystals in Hybrid Silicon Integrated Photonic Circuits: From Nanoscale Optical Traps to High-Performance Single Photon Superconducting Detectors

Prof. Jeff Young

Thursday, October 23, 2014
10:30 am @ Stirling 401


Silicon photonics - integrated optoelectronic  circuits fabricated using industry-standard silicon-on-insulator wafers - is a rapidly evolving technology that is impacting fields ranging from biomedical sensing, to quantum information.  The high refractive index contrast between silicon and air or silicon dioxide allows ultra-compact realization of integrable beamsplitters, mirrors, interferometers, filters etc.  Planar photonic crystals - 1D or 2D arrays of wavelength-sized and wavelength-spaced holes etched into the silicon - afford the highest degree of miniaturization.This talk will describe the design and testing of two different photonic-crystal-based silicon microcavity circuits, one that serves to extract and characterize individual Au nanoparticles from a heterogeneous solution of such nanoparticles, and another that exhibits near unity quantum efficiency, and sub-Hz intrinsic dark count rates, for detecting single infrared photons.