title: Long-distance free-space distribution of quantum entanglement.
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.
authors.affiliation: Institut für Experimentalphysik, Universität Wien, Boltzmanngasse 5, A-1090 Wien, Austria. markus.aspelmeyer@quantum.at
authors.forename: Markus
authors.initials: M
authors.lastname: Aspelmeyer
authors.forename: Hannes R
authors.initials: HR
authors.lastname: Böhm
authors.forename: Tsewang
authors.initials: T
authors.lastname: Gyatso
authors.forename: Thomas
authors.initials: T
authors.lastname: Jennewein
authors.forename: Rainer
authors.initials: R
authors.lastname: Kaltenbaek
authors.forename: Michael
authors.initials: M
authors.lastname: Lindenthal
authors.forename: Gabriel
authors.initials: G
authors.lastname: Molina-Terriza
authors.forename: Andreas
authors.initials: A
authors.lastname: Poppe
authors.forename: Kevin
authors.initials: K
authors.lastname: Resch
authors.forename: Michael
authors.initials: M
authors.lastname: Taraba
authors.forename: Rupert
authors.initials: R
authors.lastname: Ursin
authors.forename: Philip
authors.initials: P
authors.lastname: Walther
authors.forename: Anton
authors.initials: A
authors.lastname: Zeilinger