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Narrowband photon pair source for quantum networks

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Published in Optics Express. 2014, vol. 22, no. 4, p. 4371-4378
Abstract We demonstrate a compact photon pair source based on a periodically poled lithium niobate nonlinear crystal in a short cavity. This approach provides efficient, low-loss, mode selection that is compatible with standard telecommunication networks. Photons with a coherence time of 8.6 ns (116 MHz) are produced and their purity is demonstrated. A source brightness of 134 pairs (s. mW. MHz)(-1) is reported. The cavity parameters are chosen such that the photon pair modes emitted can be matched to telecom ultra dense wavelength division multiplexing (U-DWDM) channel spacings. The high level of purity and compatibility with standard telecom networks is of great importance for complex quantum communication networks.
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MONTEIRO, Fernando et al. Narrowband photon pair source for quantum networks. In: Optics Express, 2014, vol. 22, n° 4, p. 4371-4378. https://archive-ouverte.unige.ch/unige:83941

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Deposited on : 2016-05-30

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