Quantum teleportation across the Danube

Author(s): R. Ursin, T. Jennewein, M. Aspelmeyer, R. Kaltenbaek, M. Lindenthal, P. Walther, A. Zeilinger

Journal: Nature

Volume: 430

Page(s): 849

Year: 2004

DOI Number: 10.1038/430849a

Link: Link to publication

Abstract:

Efficient long-distance quantum teleportation1 is crucial for quantum communication and quantum networking schemes2. 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 repeater3, 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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Aspelmeyer Group Aspelmeyer Group , Zeilinger Group , Walther Group