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Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology

Q 16.19: Poster

Montag, 17. März 2014, 16:30–18:30, Spree-Palais

An ion-trap fiber-cavity apparatus as an efficient quantum interface — •Birgit Brandstätter1, Klemens Schüppert1, Bernardo Casabone1, Konstantin Friebe1, Jakob Reichel2, Tracy Northup1, and Rainer Blatt1,31Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25/4, 6020 Innsbruck, Austria — 2Laboratoire Kastler Brossel, ENS/UPMC-Paris 6/CNRS, 24 rue Lhomond, F-75005 Paris, France — 3Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria.

Optical cavities can be used as efficient quantum interfaces between photons and atoms to realize a quantum network. In such a network, photonic channels link quantum nodes composed of trapped atoms. However, the technical requirements for the building blocks of such a network are demanding because coherent effects should dominate the system's dynamics.

Here we present the development of an integrated ion-trap fiber-cavity setup, in which cavity parameters are designed for strong coupling to a single ion. Thus, coherent interaction provides high fidelities and efficiencies for network protocols. Simulations of protocols such as ion-photon state mapping and ion-photon entanglement demonstrate the advantage of a fiber-cavity system over existing ion-trap systems.

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