Four-Wave Mixing: Photon Statistics and the Impact on a Co-Propagating Quantum Signal
Silva, N. A.
Pinto, A. N.
Optics Communications Vol. 285, Nº 12, pp. 2956 - 2960, June, 2012.
ISSN (print): 0030-4018
ISSN (online): 0030-4018
Journal Impact Factor: 1,552 (in 2008)
Digital Object Identifier: 10.1016/j.optcom.2012.02.008
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 of the quantum signal changes from Poissonian to thermal when a low power is used, and remains Poissonian
for an higher power. A multithermal regime is also observed when a moderate power is used.