Photon Antibunching in Resonance Fluorescence in the Presence of Atomic Number Fluctuations

This is the authors' abstract. We don't add key points for this paper.

An analysis of photon correlation measurements for fluorescent light from a beam of two-level atoms is given where the number of pulse pairs n(τ) with time separation τ is recorded using a time-to-digital converter. These measurements are shown to correspond precisely to a subsequently normalized second-order correlation function (i.e. the normalization is performed after time averaging).