title: Heralded entanglement between widely separated atoms.
abstract: Entanglement is the essential feature of quantum mechanics. Notably, observers of two or more entangled particles will find correlations in their measurement results that cannot be explained by classical statistics. To make it a useful resource, particularly for scalable long-distance quantum communication, the heralded generation of entanglement between distant massive quantum systems is necessary. We report on the creation and analysis of heralded entanglement between spins of two single rubidium-87 atoms trapped independently 20 meters apart. Our results illustrate the viability of an integral resource for quantum information science, as well as for fundamental tests of quantum mechanics.
authors: Fakultät für Physik, Ludwig-Maximilians-Universität München, München, Germany.
authors: Julian
authors: J
authors: Hofmann
authors: Michael
authors: M
authors: Krug
authors: Norbert
authors: N
authors: Ortegel
authors: Lea
authors: L
authors: Gérard
authors: Markus
authors: M
authors: Weber
authors: Wenjamin
authors: W
authors: Rosenfeld
authors: Harald
authors: H
authors: Weinfurter