Self-consistent characterization of light statistics
  We demonstrate the possibility of a self-consistent characterization of the photon-number statistics of a light field by using photoemissive detectors with internal gain simply endowed with linear input/output responses. The method can be applied to both microscopic and mesoscopic photon-number regimes. The detectors must operate in the linear range without need of photon-counting capabilities. 
Maria Bondani, Alessia Allevi, Andrea Agliati, Alessandra Andreoni