Effective fiber-coupling of entangled photons for quantum communication
arXiv:quant-ph/0303126 · doi:10.1016/j.optcom.2003.09.064
Abstract
We report on theoretical and experimental demonstration of high-efficiency coupling of two-photon entangled states produced in the nonlinear process of spontaneous parametric down conversion into a single-mode fiber. We determine constraints for the optimal coupling parameters. This result is crucial for practical implementation of quantum key distribution protocols with entangled states.
3 pages, 2 figures, submitted to Optics Letters
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