Abstract
Photon pairs have become an important resource for quantum communication. Lately, effort has been concentrated on generating those pairs in waveguiding structures to avoid collection and insertion losses. For instance, photon pair sources based on parametric fluorescence in periodically poled lithium niobate waveguides or on four-wave mixing in silica fibre have been extensively studied. In 1999, G. Bonfrate et al. reported the observation of parametric fluorescence in periodically poled D-shape silica fibre [1], which suggests another promising photon pair source.
© 2007 IEEE
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