Long-distance free-space distribution of quantum entanglement

Author(s)
Markus Aspelmeyer, Hannes Böhm, Tsewang Gyatso, Thomas Jennewein, Rainer Kaltenbaek, Michael Lindenthal, Gabriel Molina, Andreas Poppe, Kevin Resch, Michael Taraba, Rupert Ursin, Philip Walther, Anton Zeilinger
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.

Organisation(s)
Quantum Optics, Quantum Nanophysics and Quantum Information
External organisation(s)
Universität Wien
Journal
Science
Volume
301
Pages
621-623
No. of pages
3
ISSN
0036-8075
DOI
https://doi.org/10.1126/science.1085593
Publication date
08-2003
Peer reviewed
Yes
Austrian Fields of Science 2012
103026 Quantum optics
Portal url
https://ucris.univie.ac.at/portal/en/publications/longdistance-freespace-distribution-of-quantum-entanglement(69d22ec9-1d65-47ff-a20b-4585f21aace4).html