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arXiv · 0809.2588

Experimental high-intensity three-photon entangled source

Huai-Xin Lu·Jun Zhang·Xiao-Qin Wang·Ying-De Li·Chun-Yan Wang
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Abstract

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.

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Huai-Xin Lu, Jun Zhang, Xiao-Qin Wang, Ying-De Li, Chun-Yan Wang. 2008-09-15. Experimental high-intensity three-photon entangled source. https://doi.org/10.1103/physreva.78.033819

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