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\bibitem{Zhong_etal2010} Zhong, T., Hu, X., Wong, F. N. C., Berggren, K. K., Roberts, T. D., \& Battle, P. (2010). High-quality fiber-optic polarization entanglement distribution at 1.3~μm telecom wavelength. \textit{Opt. Lett.}, \textit{35}(9), 1392--1394.

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