Generation of polarization-entangled photon pairs in a Bragg reflection waveguide

We demonstrate experimentally that spontaneous parametric down-conversion in an AlxGa(1-x)As semiconductor Bragg reflection waveguide can make for paired photons highly entangled in the polarization degree of freedom at the telecommunication wavelength of 1550 nm. The pairs of photons show visibilit...

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Bibliographic Details
Published in:Optics express 2013-05, Vol.21 (9), p.10841-10849
Main Authors: Vallés, A, Hendrych, M, Svozilík, J, Machulka, R, Abolghasem, P, Kang, D, Bijlani, B J, Helmy, A S, Torres, J P
Format: Article
Language:English
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Summary:We demonstrate experimentally that spontaneous parametric down-conversion in an AlxGa(1-x)As semiconductor Bragg reflection waveguide can make for paired photons highly entangled in the polarization degree of freedom at the telecommunication wavelength of 1550 nm. The pairs of photons show visibility higher than 90% in several polarization bases and violate a Clauser-Horne-Shimony-Holt Bell-like inequality by more than 3 standard deviations. This represents a significant step toward the realization of efficient and versatile self pumped sources of entangled photon pairs on-chip.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.21.010841