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Long-distance free-space distribution of quantum entanglement |
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| Authors: | Aspelmeyer Markus Böhm Hannes R Gyatso Tsewang Jennewein Thomas Kaltenbaek Rainer Lindenthal Michael Molina-Terriza Gabriel Poppe Andreas Resch Kevin Taraba Michael Ursin Rupert Walther Philip Zeilinger Anton |
| Institution: | Institut für Experimentalphysik, Universit?t Wien, Boltzmanngasse 5, A-1090 Wien, Austria. markus.aspelmeyer@quantum.at |
| Abstract: | We demonstrate the distribution of quantum entanglement via optical free-space links to independent receivers separated by 600 m, with no line of sight between each other. A Bell inequality between those receivers is violated by more than four standard deviations, confirming the quality of the entanglement. This outdoor experiment represents a step toward satellite-based distributed quantum entanglement. |
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