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Opt Lett. 1979 Jul 1;4(7):205-7.

Sub-Poissonian photon statistics in resonance fluorescence.

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1
Department of Physics and Astronomy and Institute of Optics, University of Rochester, Rochester, New York 14627, USA.

Abstract

Expressions are derived for the probability p(n) that n photons are emitted in a given time in the steady state by a two-level atom, when it is placed in a resonant, coherent, exciting field. The distribution p(n) is shown to be narrower than Poissonian. The ratio [<(Deltan)(2)> - <n>]<n> is negative and has an absolute maximum value of 3/4. The possibility of observing the sub-Poissonian statistics is discussed briefly.

PMID:
19687850
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