Influence of spectral diffusion on single-molecule photon statistics

Y. He, E. Barkai

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49 Scopus citations


The influence of spectral diffusion on the distribution of the number of photons emitted by a single molecule was investigated. A generating function method was used to obtain an exact analytical formula for Mandel's Q parameter. Transitions between quantum sub-Poissonian and classical super-Poissonian behaviors, and fast to slow modulation limits were observed for both weak and strong excitation fields. The super-Poissonian behavior of Q was expected if the spectral diffusion process was slow enough.

Original languageEnglish
Article number068302
Pages (from-to)068302-1-068302-4
JournalPhysical Review Letters
Issue number6
StatePublished - 6 Aug 2004
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation Grant No. CHE-0344930.


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