Lifetimes of atomic Rydberg states by autocorrelation function
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We have derived the autocorrelation function for the field emitted by a Rydberg atom in a micocavity weakly excited in the strong coupling regime and in the non-resonant case. We propose simple analytical expressions and make use of them to determine the atomic frequency and the mean radiative lifetime of the Rydberg atom. As compared to direct measurements this method is promising.