|Title||A versatile waveguide source of photon pairs for chip-scale quantum information processing|
|Publication Type||Journal Article|
|Year of Publication||2009|
|Authors||J. Chen, A. J. Pearlman, A. Ling, J. Fan, and A. L. Migdall|
|Keywords||2009, Nonlinear optics, parametric processes, Quantum information and processing, Waveguides|
We demonstrate a bright, bandwidth-tunable, quasi-phase-matched 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 KTiOPO4 (PPKTP) waveguide, which supports both type-0 and type-II spontaneous parametric down-conversion. We map out relative contributions of two-photon to one-photon fluorescence for a range of operating parameters. Such a versatile device is highly promising for future chip-scale quantum information processing.