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arXiv · 1110.5064

Dispersion-based control of modal characteristics for parametric down-conversion in a multimode waveguide

Michal Karpinski·Czeslaw Radzewicz·Konrad Banaszek
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Abstract

We report generation of near-infrared photon pairs in fundamental spatial modes via type-II spontaneous parametric down-conversion in a periodically poled potassium titanyl phosphate (KTiOPO4) nonlinear waveguide supporting multiple transverse modes. This demonstrates experimentally a versatile scheme for controlling the spatial characteristics of the produced nonclassical light based on exploitation of intermodal dispersion. The down-converted photons are characterized by the measurement of the beam quality factors in the heralded regime.

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Michal Karpinski, Czeslaw Radzewicz, Konrad Banaszek. 2012-01-23. Dispersion-based control of modal characteristics for parametric down-conversion in a multimode waveguide. https://doi.org/10.1364/ol.37.000878

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