Experimental high-intensity three-photon entangled source

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We experimentally realize a high-intensity three-photon Greenberger-Horne-Zeilinger (GHZ) entanglement source directly following the proposal by Rarity and Tapster [J. G. Rarity and P. R. Tapster, Phys. Rev. A 59, R35 (1999)]. The threefold coincidence rate can be more than 200 Hz with a fidelity of 0.811, and the intensity can be further improved with moderate fidelity degradation. The GHZ entanglement is characterized by testing the Bell-Mermin inequality and using an entanglement witness operator. To optimize the polarization-entangled source, we theoretically analyze the relationship between the mean photon number of the single-photon source and the probability of parametric down-conversion.
4 pages, 4 figures

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/169138

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0809.2588
 http://arxiv.org/abs/0809.2588
 Phys. Rev. A 78, 033819 (2008)
 doi:10.1103/PhysRevA.78.033819

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arXiv