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G Zumofen

Publications and source records attributed to G Zumofen.

At least 19 recordsLinked to original sources
PubMed2000

Levy distribution of single molecule line shape cumulants in glasses

We investigate the distribution of single molecule line shape cumulants, kappa(1),kappa(2),ellipsis, in low temperature glasses based on the sudden jump, standard tunneling model. We find that the cumulants are described by Levy stable laws, thus the generalized central limit theorem is applicable for this problem.

Journal Article↗
PubMed2000

Nonclassical photon statistics in single-molecule fluorescence at room temperature

The fluorescence of single terrylene molecules in a crystalline host is investigated at room temperature by scanning confocal optical microscopy. Photon arrival times are analyzed in terms of interphoton time distributions, second order correlation functions, and the variance of the photon number probability distribution. Antibunching at short times and bunching behavior for longer times is observed, associated with sub- and super-Poissonian statistics, respectively. A rate-equation analysis of the molecular level populations indicates an accelerated reverse intersystem crossing.

Journal Article↗