Author(s): Wenjamin Rosenfeld, Daniel Burchardt, Robert Garthoff, Kai Redeker, Norbert Ortegel, Markus Rau, and Harald Weinfurter
Rubidium atoms 400 meters apart have been used to demonstrate the first event-ready violation of a Bell inequality, free from the usual loopholes.
[Phys. Rev. Lett. 119, 010402] Published Thu Jul 06, 2017