Experimental nonclassicality of single-photon-added thermal light states

Alessandro Zavatta, Valentina Parigi, Marco Bellini
2007 Physical Review A. Atomic, Molecular, and Optical Physics  
We report the experimental realization and tomographic analysis of novel quantum light states obtained by exciting a classical thermal field by a single photon. Such states, although completely incoherent, possess a tunable degree of quantumness which is here exploited to put to a stringent experimental test some of the criteria proposed for the proof and the measurement of state non-classicality. The quantum character of the states is also given in quantum information terms by evaluating the amount of entanglement that they can produce.
doi:10.1103/physreva.75.052106 fatcat:repibr75qvczzdlmyhmoy6ilh4