Bonn 2000 – scientific programme
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Q: Quantenoptik
Q 1: Quanteneffekte I
Q 1.6: Talk
Monday, April 3, 2000, 18:00–18:15, HS XI
Collective Effects in the Self-interference of a Single Photon Emitted by Two Atoms — •Trung Dung Ho1 and Kikuo Ujihara2 — 1Theoretisch-Physikalisches-Institut, Friedrich-Schiller-Universität Jena, D-07743 Jena, Germany — 2The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
Collective effects in the spontaneous emission pattern of two identical two-level atoms a fixed distance apart and sharing initially a single excitation are investigated. It is shown that the interference can take place even when it is known for certain which atom is excited initially. This interference is due solely to the atomic coherence established through multiple photon absorptions and re-emissions and will disappear if it is ignored. The interference patterns with and without collective effects are compared for symmetric and antisymmetric initial states. The dark center from an antisymmetric state is shown both analytically and numerically.