A versatile waveguide source of photon pairs for chip-scale quantum information processing

Jun Chen, Aaron J. Pearlman, Alexander Ling, Jingyun Fan, Alan L. Migdall
2009 Optics Express  
We demonstrate a bright, bandwidth-tunable, quasi-phasematched single-waveguide source generating photon pairs near 900 nm and 1300 nm. Two-photon coincidence spectra are measured at a range of operating temperatures of a periodically-poled KTiOPO 4 (PPKTP) waveguide, which supports both type-0 and type-II spontaneous parametric downconversion. We map out relative contributions of two-photon to one-photon fluorescence for a range of operating parameters. Such a versatile device is highly
more » ... ng for future chip-scale quantum information processing. Work of U.S. government; not subject to U.S. copyright.
doi:10.1364/oe.17.006727 pmid:19365501 fatcat:pmvaivapibbo3bjvnhhhhytt5q