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ISRN Optics
Volume 2012 (2012), Article ID 745871, 6 pages
Research Article

Probability Densities for Fluorescent Photons Emitted by a Two-State Atom Driven by a Laser

Department of Physics and Astronomy, Mississippi State University, P.O. Drawer 5167, Mississippi State, MS 39762-5167, USA

Received 20 September 2012; Accepted 14 November 2012

Academic Editors: J. M. Girkin, D. Poitras, and M. Potasek

Copyright © 2012 Robertsen A. Riehle and Henk F. Arnoldus. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Fluorescent photons emitted by a two-state atom in a laser beam are correlated. We have obtained the probability density for the emission of the th photon after a random initial time . It is shown that the correlations between the photons lead to a deviation from the poissonian value for this function (the probability density for independent events), although the deviation is not as significant as one may expect.