Experimental reconstruction of photon statistics without photon counting
  Experimental reconstructions of photon number distributions of both continuous-wave and pulsed light beams are reported. Our scheme is based on on/off avalanche photodetection assisted by maximum-likelihood estimation and does not involve photon counting. Reconstructions of the distribution for both semiclassical and quantum states of light are reported for single-mode as well as for multimode beams. 
M. Bondani, G. Zambra, A. Andreoni (INFM & Univ, Como), M. Gramegna,   M. Genovese, G. Brida (IEN, Torino), A. Rossi, M. G. ...