Darmstadt 2008 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 44: Quanteneffekte (Interferenz / Sonstige)

Q 44.3: Talk

Thursday, March 13, 2008, 14:30–14:45, 2D

Interference of resonance fluorescence from two distant atoms — •Felix Rohde, Carsten Schuck, Marc Almendros, Roger Gehr, Francois Dubin, Markus Hennrich, and Jürgen Eschner — ICFO - Institut de Ciencies Fotoniques, Castelldefels (Barcelona), Spain

We trap two single calcium ions simultaneously in two independent ion traps at a distance of about 1 m. The ions are continuously excited using lasers at 397 nm and 866 nm that are frequency-stabilised by a transfer locking scheme to an atomic reference line in cesium. The continuous resonance fluorescence from the two ions is coherently superimposed and recorded with photomultipliers in photon counting mode. We present results on classical and quantum interference in the detected light. Such interference will be used for entangling the two ions by conditional state preparation.