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We present an experimental characterization of the evolution of the photon statistics of a quantum signal, in a wavelength-division multiplexing (WDM) environment. We use an on/off avalanche photodetector operating in the Geiger mode to measure the photon counts, and the maximum-likelihood estimation (MLE) method and the expectation-maximization (EM) algorithm to reconstruct the photon statistics...
We discuss the statistics of Poissonian and thermal sources, and verify that as an approximation to a single-photon source, both Poissonian and thermal sources can be used, when the average number of photons per pulse is of the order of 0.1. An experimental characterization of the photon statistics of a single-photon source obtained from the four-wave mixing (FWM) process in optical fibers is presented...
We reconstruct the photon statistics of a single-photon source based on the stimulated four-wave mixing (FWM) process. We find that the statistics of the source goes from thermal, at a low power regime, to Poissonian, at a high power regime. We also study the impact of the FWM process on a co-propagating coherent quantum signal in a wavelength-division multiplexed (WDM) lightwave system. The statistics...
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