Communications: quantum teleportation across the Danube |
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Authors: | Ursin Rupert Jennewein Thomas Aspelmeyer Markus Kaltenbaek Rainer Lindenthal Michael Walther Philip Zeilinger Anton |
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Affiliation: | Institute for Experimental Physics, University of Vienna, 1090 Vienna, Austria. rupert.ursin@univie.ac.at |
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Abstract: | Efficient long-distance quantum teleportation is crucial for quantum communication and quantum networking schemes. Here we describe the high-fidelity teleportation of photons over a distance of 600 metres across the River Danube in Vienna, with the optimal efficiency that can be achieved using linear optics. Our result is a step towards the implementation of a quantum repeater, which will enable pure entanglement to be shared between distant parties in a public environment and eventually on a worldwide scale. |
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