2007
DOI: 10.1364/oe.15.012769
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Abstract: 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 proc… Show more

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Cited by 91 publications
(78 citation statements)
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“…Our device takes advantage of high-efficiency parametric down-conversion (PDC) based on the χ (2) nonlinearity in waveguides. Periodically poled titanium indiffused waveguides in lithium niobate exhibit extremely low losses [25,26] and provide optical guiding in TE and TM polarizations, thereby allowing type II PDC wherein an ordinarily polarized pump beam decays to orthogonally polarized photon pairs.…”
Section: Device Designmentioning
confidence: 99%
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“…Our device takes advantage of high-efficiency parametric down-conversion (PDC) based on the χ (2) nonlinearity in waveguides. Periodically poled titanium indiffused waveguides in lithium niobate exhibit extremely low losses [25,26] and provide optical guiding in TE and TM polarizations, thereby allowing type II PDC wherein an ordinarily polarized pump beam decays to orthogonally polarized photon pairs.…”
Section: Device Designmentioning
confidence: 99%
“…We also directly characterized the purity of the source by the unheralded second order Glauber correlation function, g (2) (0). If the JSI is highly correlated, that is consisting of multiple frequency modes, we expect a Poissonian photon number distribution, corresponding to g (2) P (0) = 1. Alternatively, a de-correlated PDC spectrum, corresponding to a spectrally pure state, results in a thermal distribution with g (2) th (0) = 2.…”
Section: B Quantum Characterizationmentioning
confidence: 99%
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