American Physical Society, Physical Review A, 5(75), 2007
DOI: 10.1103/physreva.75.052106
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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. Comment: 7 pages, 6 figures, accepted for publication in Phys. Rev. A