Increased pump acceptance bandwidth in spontaneous parametric downconversion process using Bragg reflection waveguides
Résumé
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 Al0.02Ga0.98N and Al0.45Ga0.55N. Such photon-pair generators should find applications in realizing compact and stable sources for quantum information processing.
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Autre [cond-mat.other]
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