Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 16: Quanteneffekte (Interferenz und Korrelationen)
Q 16.8: Vortrag
Montag, 19. März 2007, 18:15–18:30, 5E
Photon second order correlations vs. interference for a single atom in a half cavity — •Daniel Rotter1, Francois Dubin1, Manas Mukherhjee1, Carlos Russo1, Juergen Eschner3, and Rainer Blatt1,2 — 1Institut für Experimentalphysik, Universität Innsbruck, Austria — 2"Osterreichische Akademie der Wissenschaften, Austria — 3Institute for Photonic Sciences (ICFO), Spain
We present experiments with a single Ba+ ion in a Paul trap, continuously laser-excited at Doppler cooling conditions. A part of the resonance fluorescence emitted by the ion is retro-reflected, thus leading to single-photon interference fringes of high contrast [1]. We investigate the second order photon correlations, varying the relative distance between the ion and the retro-reflecting mirror. We demonstrate that the measured correlations can be tuned smoothly from an antibunching minimum to a bunching-like maximum. Our analysis concerns the non-Markovian regime, i.e. the detection of photon pairs separated by large time intervals is modulated by single-photon interference. The field establishment in a half-cavity interferometer is revealed.
[1] J. Eschner et al., Nature 413, 495 (2001).