title: Remote preparation of an atomic quantum memory.
abstract: Storage and distribution of quantum information are key elements of quantum information processing and future quantum communication networks. Here, using atom-photon entanglement as the main physical resource, we experimentally demonstrate the preparation of a distant atomic quantum memory. Applying a quantum teleportation protocol on a locally prepared state of a photonic qubit, we realized this so-called remote state preparation on a single, optically trapped 87Rb atom. We evaluated the performance of this scheme by the full tomography of the prepared atomic state, reaching an average fidelity of 82%.
authors.affiliation: Department für Physik, Ludwig-Maximilians Universität München, D-80799 München, Germany. Wenjamin.Rosenfeld@physik.unimuenchen.de
authors.forename: Wenjamin
authors.initials: W
authors.lastname: Rosenfeld
authors.forename: Stefan
authors.initials: S
authors.lastname: Berner
authors.forename: Jürgen
authors.initials: J
authors.lastname: Volz
authors.forename: Markus
authors.initials: M
authors.lastname: Weber
authors.forename: Harald
authors.initials: H
authors.lastname: Weinfurter