We report the first (to our knowledge) observation of correlated photon emission in hydrogenated amorphous- silicon waveguides. We compare this to photon generation in crystalline silicon waveguides with the same geome- try. In particular, we show that amorphous silicon has a higher nonlinearity and competes with crystalline silicon in spite of higher loss.
@article{arxiv.1102.1030,
title = {Generation of correlated photons in hydrogenated amorphous-silicon waveguides},
author = {S. Clemmen and A. Perret and S. K. Selvaraja and W. Bogaerts and D. van Thourhout and R. Baets and Ph. Emplit and S. Massar},
journal= {arXiv preprint arXiv:1102.1030},
year = {2011}
}