Nonclassical correlations in damped quantum solitons

Details Nonclassical correlations in damped quantum solitons Nonclassical correlations in damped quantum solitons

1999-04-06

arxiv.org/abs/quant-ph/9904017v2

Physics

Quantum Physics

15 pages, 11 PS figures (color)

Scientific paper

10.1088/1464-4266/2/4/301

Using cumulant expansion in Gaussian approximation, the internal quantum statistics of damped soliton-like pulses in Kerr media are studied numerically, considering both narrow and finite bandwidth spectral pulse components. It is shown that the sub-Poissonian statistics can be enhanced, under certain circumstances, by absorption, which damps out some destructive interferences. Further, it is shown that both the photon-number correlation and the correlation of the photon-number variance between different pulse components can be highly nonclassical even for an absorbing fiber. Optimum frequency windows are determined in order to realize strong nonclassical behavior, which offers novel possibilities of using solitons in optical fibers as a source of nonclassically correlated light beams.

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