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Opt Express. 2009 Apr 13;17(8):6727-40.

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

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  • 1Optical Technology Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8441, USA. jun.chen@nist.gov

Abstract

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 KTiOPO(4) (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.

PMID:
19365501
[PubMed - indexed for MEDLINE]
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