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arXiv · 1712.07140

Independent high-purity photons created in domain-engineered crystals

Francesco Graffitti·Peter Barrow·Massimiliano Proietti·Dmytro Kundys·Alessandro Fedrizzi
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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.

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Francesco Graffitti, Peter Barrow, Massimiliano Proietti, Dmytro Kundys, Alessandro Fedrizzi. 2017-12-19. Independent high-purity photons created in domain-engineered crystals. https://doi.org/10.1364/optica.5.000514

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