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arXiv · 0904.1791

Increased pump acceptance bandwidth in spontaneous parametric downconversion process using Bragg reflection waveguides

K. Thyagarajan·R. Das·O. Alibart·M. de Micheli·D. B. Ostrowsky·S. Tanzilli
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Abstract

In this paper we show that by suitably tailoring the dispersion characteristics of a Bragg reflection waveguide (BRW) mode, it is possible to achieve efficient photon pair generation over a large pump bandwidth while maintaining narrow signal bandwidth. The structure proposed consists of a high index core BRW with a periodically poled GaN core and periodically stratified cladding made up of alternate layers of $Al_{0.02}Ga_{0.98}N$ and $Al_{0.45}Ga_{0.55}N$. Such photon-pair generators should find applications in realizing compact and stable sources for quantum information processing.

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K. Thyagarajan, R. Das, O. Alibart, M. de Micheli, D. B. Ostrowsky, S. Tanzilli. 2009-04-11. Increased pump acceptance bandwidth in spontaneous parametric downconversion process using Bragg reflection waveguides. https://doi.org/10.1364/oe.16.003577

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