Hamburg 2009 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 18: Quanteninformation: Photonen I
Q 18.6: Vortrag
Dienstag, 3. März 2009, 11:45–12:00, VMP 6 HS-D
Single Photon Source for an Ion Trap Quantum Network — •Jan Huwer, Marc Almendros, Felix Rohde, Carsten Schuck, Nicolas Piro, Markus Hennrich, Francois Dubin, and Jürgen Eschner — ICFO - The Institute of Photonic Sciences, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain
On the way towards the realisation of entanglement between two distantly trapped ions we report the implementation of a high efficiency single photon source based on one of the two ions.
This is achieved by triggering a spontaneous Raman transition between two electronic states of a single 40Ca+ ion. The ion is trapped in a linear Paul trap which is surrounded by two high numerical aperture laser objectives, allowing us to achieve high photon scattering rates into a single optical mode with detection efficiencies comparable to atom-cavity based systems. By adjusting the triggering laser pulses we can engineer the coherence properties of the generated single photons which thus provide a powerful tool for establishing entanglement between remote particles based on different types of protocols.