Open AccessBright narrowband source of photon pairs at optical telecommunication wavelengths using a type-II periodically poled lithium niobate waveguide
Author(s) -
Go Fujii,
Naoto Namekata,
Masayuki Motoya,
Sunao Kurimura,
Shuichiro Inoue
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.012769
Subject(s) - lithium niobate , optics , narrowband , physics , spontaneous parametric down conversion , photon , quasi phase matching , waveguide , nonlinear optics , brightness , optoelectronics , laser , quantum mechanics , quantum entanglement , quantum
We report on the generation of narrowband photon pairs at telecommunication wavelengths using a periodically poled lithium niobate waveguide that utilizes the nonlinear tensor element d(24) for type-II quasi phase matching. The FWHM bandwidth of the spontaneous parametric downconversion was 1 nm. The brightness of the photon pair source was ~6x10(5)/s/GHz when the pump power was 1 mW. The indistinguishability of the signal and idler photons generated by the degenerate spontaneous parametric downconversion process was studied in a Hong-Ou-Mandel type interference experiment.