Generation of correlated photons in controlled spatial modes by down-conversion in nonlinear waveguides
Quantum Physics
2009-11-07 v1
Abstract
We report the observation of correlated photon pairs generated by spontaneous parametric down-conversion in a quasi-phase matched KTiOPO4 nonlinear waveguide. The highest ratio of coincidence to single photon count rates observed in the 830 nm wavelength region exceeds 18%. This makes nonlinear waveguides a promising source of correlated photons for metrology and quantum information processing applications. We also discuss possibilities of controlling the spatial characteristics of the down-converted photons produced in multimode waveguide structures.
Cite
@article{arxiv.quant-ph/0103026,
title = {Generation of correlated photons in controlled spatial modes by down-conversion in nonlinear waveguides},
author = {Konrad Banaszek and Alfred B. U'Ren and Ian A. Walmsley},
journal= {arXiv preprint arXiv:quant-ph/0103026},
year = {2009}
}
Comments
4 pages, REVTeX