Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 55: Quanteneffekte (Lichtstreuung I)
Q 55.3: Vortrag
Donnerstag, 22. März 2007, 12:30–12:45, 5E
Measurement-induced spatial modulation of spontaneous decay and photon arrival times — •Joachim von Zanthier1, Thierry Bastin2, and Girish S. Agarwal3 — 1Institut für Optik, Information und Photonik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany — 2Institut de Physique Nucléaire, Atomique et de Spectroscopie, Université de Liège au Sart Tilman, Liège, Belgium — 3Department of Physics, Oklahoma State University, Stillwater, OK, USA
We report on the manipulation of the spontaneous emission process leading to a spatial modulation of spontaneous decay [1]. The effect is observed in case of coherently driven atoms separated by less than a transition wavelength. It is quantified by Glauber’s photon-photon second order correlation function. We show that the photon arrival time, usually regarded as an entirely random process, depends not only on where a photon is detected but also on where a former photon had been recorded previously. Our results shed light on the unexpected consequences of state reduction and entanglement for the fundamental process of spontaneous emission.
[1] J. von Zanthier, T. Bastin, G. S. Agarwal, accepted for publication in Phys. Rev. A (Rapid Comm.)