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Communications

Quantum teleportation across the Danube

Nature volume 430, page 849 (19 August 2004) | Download Citation

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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.

A real-world experiment marks a step towards worldwide quantum communication.

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Author information

Affiliations

  1. *Institute for Experimental Physics, University of Vienna, 1090 Vienna, Austria

    • Rupert Ursin
    • , Thomas Jennewein
    • , Markus Aspelmeyer
    • , Rainer Kaltenbaek
    • , Michael Lindenthal
    • , Philip Walther
    •  & Anton Zeilinger
  2. †Austrian Academy of Science, 1090 Vienna, Austria

    • Thomas Jennewein
    •  & Anton Zeilinger

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Competing interests

The authors declare no competing financial interests.

Corresponding author

Correspondence to Rupert Ursin.

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DOI

https://doi.org/10.1038/430849a

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