title: Atom-atom entanglement by single-photon detection.
abstract: A scheme for entangling distant atoms is realized, as proposed in the seminal paper by [C. Cabrillo et al., Phys. Rev. A 59, 1025 (1999)]. The protocol is based on quantum interference and detection of a single photon scattered from two effectively one meter distant laser cooled and trapped atomic ions. The detection of a single photon heralds entanglement of two internal states of the trapped ions with high rate and with a fidelity limited mostly by atomic motion. Control of the entangled state phase is demonstrated by changing the path length of the single-photon interferometer.
authors.affiliation: Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria.
authors.forename: L
authors.initials: L
authors.lastname: Slodička
authors.forename: G
authors.initials: G
authors.lastname: Hétet
authors.forename: N
authors.initials: N
authors.lastname: Röck
authors.forename: P
authors.initials: P
authors.lastname: Schindler
authors.forename: M
authors.initials: M
authors.lastname: Hennrich
authors.forename: R
authors.initials: R
authors.lastname: Blatt