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Conference on Lasers and Electro-Optics

Type-0 Spontaneous Parametric Down Conversion in AlGaAs Bragg Reflection Waveguides

Abolghasem, Bijlani, Amr Saher Helmy, Weihs

Published Jan 1, 2011• 0 citations
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AlGaAs Bragg reflection waveguides are promising systems for the generation of single and entangled photons through the process of spontaneous parametric down-conversion (SPDC) [1]. We use a type II SPDC process where the downconverted photons are orthogonally polarized. The produced photons are inherently polarization-entangled eliminating the need for any additional entanglement setup. The material AlGaAs is our preferred choice as a nonlinear medium because it features a high nonlinear coefficient allowing for room temperature operation and has the advantage of being a non-birefringent material. Further, the material platform allows for the direct integration of a pump laser into the same chip.