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Q: Quantenoptik und Photonik
Q 29: Poster Quanteneffekte
Q 29.2: Poster
Dienstag, 14. März 2006, 16:30–18:30, Labsaal
Cavity-QED experiments with single trapped Ca+ ions — •Carlos Russo1, Eoin Phillips1, Helena Barros1, Thomas Monz1, Christoph Becher2, Piet Schmidt1, and Rainer Blatt1,3 — 1Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, A-6020, Austria — 2Universität des Saarlandes, Postfach 151150, D-66041 Saarbrücken, Germany — 3Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstraße 21a, A-6020 Innsbruck, Austria
The storage of a string of ions in a linear Paul trap combined with the use of tailored laser pulses has been shown to be a scalable platform for the implementation of quantum algorithms and multi-particle entanglement, thus fulfilling DiVicenzo’s criteria for quantum computing. However, the ability to interconvert stationary and flying qubits is an additional criteria to achieve the full power of quantum information processing. It allows quantum information to be transferred between specified nodes of a given network of quantum computers.
In our setup, a single trapped 40Ca+ ion is coupled to an optical resonator. By exploiting cavity-QED effects, such a system can be used to demonstrate the mapping of quantum information stored in a basis of electronic states of the ion (stationary qubit) into a basis of photonic states (flying qubit). The deterministic generation of single photons is a crucial first step. Moreover, the very same system can be used to implement a single ion laser and atom-photon entanglement. We will report on the status of our experiments towards these goals.