Toward an ion–photon quantum interface in an optical cavity
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We demonstrate several building blocks for an ion–photon interface based on a trapped 40Ca+ ion in an optical cavity. We identify a favorable experimental configuration and measure system parameters, including relative motion of the trapped ion and the resonator mode. A complete spectrum of cavity-assisted Raman transitions between the 42S1/2 and 32D5/2 manifolds is obtained. On two of these transitions, we generate orthogonally polarized cavity photons, and we demonstrate coherent manipulation of the corresponding pair of atomic states. Possible implementations of atom-photon entanglement and state mapping within the ion-cavity system are discussed.
KeywordsCavity Mode Rabi Frequency Raman Transition Magnetic Field Axis Cavity Photon
We thank K. Hammerer for helpful discussions. We gratefully acknowledge support from the Austrian Science Fund (FWF), the European Commission (AQUTE), and the Institut für Quanteninformation GmbH. T.E.N. acknowledges support from a Marie Curie International Incoming Fellowship within the 7th European Community Framework Programme, and B.B. acknowledges support from the DOC-fFORTE fellowship of the Austrian Academy of Sciences.