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High efficiency coupling of photon pairs in practice

Published in Optics Express. 2013, vol. 21, no. 23, p. 27641-27651
Abstract Multi-photon and quantum communication experiments such as loophole-free Bell tests and device independent quantum key distribution require entangled photon sources which display high coupling efficiency. In this paper we put forward a simple quantum theoretical model which allows the experimenter to design a source with high pair coupling efficiency. In particular we apply this approach to a situation where high coupling has not been previously obtained: we demonstrate a symmetric coupling efficiency of more than 80% in a highly frequency non-degenerate configuration. Furthermore, we demonstrate this technique in a broad range of configurations, i.e. in continuous wave and pulsed pump regimes, and for different nonlinear crystals.
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Research group Groupe Zbinden
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BARBOSA DOS SANTOS GUERREIRO, Thiago et al. High efficiency coupling of photon pairs in practice. In: Optics Express, 2013, vol. 21, n° 23, p. 27641-27651. doi: 10.1364/OE.21.027641 https://archive-ouverte.unige.ch/unige:83934

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Deposited on : 2016-05-30

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