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.
journal_name
Naturejournal_title
Natureauthors
Ursin R,Jennewein T,Aspelmeyer M,Kaltenbaek R,Lindenthal M,Walther P,Zeilinger Adoi
10.1038/430849akeywords:
subject
Has Abstractpub_date
2004-08-19 00:00:00pages
849issue
7002eissn
0028-0836issn
1476-4687pii
430849ajournal_volume
430pub_type
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