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Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 39: Quantum Information: Atoms and Ions III

Q 39.5: Talk

Wednesday, March 10, 2010, 17:45–18:00, E 214

Ion-Photon and Photon-Ion Interfaces for Quantum NetworksFelix Rohde1, Nicolas Piro1, Carsten Schuck1, Marc Almendros1, Jan Huwer1, Joyee Ghosh1, Markus Hennrich1, Albrecht Haase1, Francois Dubin1, and •Jürgen Eschner1,21ICFO - Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain — 2FR Experimentalphysik, Universität des Saarlandes, Campus E2.6, 66123 Saarbrücken

We report experimental progresses towards the realization of tools for quantum networking with single ions, such as two-photon interference from two remote, bandwidth tunable single photon sources and the generation of polarization correlated photon pairs from a single ion. A possible strategy to create remote entanglement in a quantum network is to generate entangled photon pairs by means of parametric down-conversion and make them interact with distant atoms, thereby transferring entanglement from photonic to atomic qubits. We present the realization of a first step towards such entanglement transfer, the absorption of a single down-conversion photon by a single 40Ca+ ion, heralded by the partner photon.

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