Independent high-purity photons created in domain-engineered crystals
arXiv:1712.07140 · doi:10.1364/OPTICA.5.000514
Abstract
Advanced photonic quantum technology relies on multi-photon interference which requires bright sources of high-purity single photons. Here, we implement a novel domain-engineering technique for tailoring the nonlinearity of a parametric down-conversion crystal. We create pairs of independently-heralded telecom-wavelength photons and achieve high heralding, brightness and spectral purities without filtering.
8 pages, 5 figures Imprecise comparison with the experimental results in [28] has been removed
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