Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 21: Quanteneffekte (Offene und Wenigteilchensysteme)
Q 21.8: Vortrag
Dienstag, 20. März 2007, 12:15–12:30, 5E
Photon emission of a single trapped ion into a cavity — •Carlos Russo1, Eoin Philips1, Helena Barros1, Andreas Stute1, Christoph Becher1,3, Piet Schmidt1, and Rainer Blatt1,2 — 1Institut für Experimentalphysik, Universität Innsbruck,Technikerstraße 25, A-6020 Innsbruck, Austria — 2Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria — 3Fachrichtung 7.3 (Technische Physik), Universität des Saarlandes, Postfach 151150, D-66041 Saarbrücken, Germany
In our setup, a single trapped 40Ca+ ion is coupled to an optical resonator. We generate photons in the cavity mode continuously, by exploiting vacuum-stimulated Raman transitions between the Zeeman substates of the S1/2 and D3/2 manifolds. The pump laser at 397 nm is off-resonant to the S1/2→P1/2 transition, and the cavity is detuned from the P1/2→D3/2 transition. The D3/2 state is continuously repumped by a near-resonant laser at 866 nm. Depending on the pump laser polarisation, we can choose between two photon emission patterns with different spectral properties. In either case, the polarisation of the generated photons is well defined. We find good qualitative agreement of the experimental results with density matrix simulations. A variation of the scheme using pump laser pulses allows for the implementation of a deterministic single photon source.