阻尼量子孤子中的非经典关联
Nonclassical correlations in damped quantum solitons
摘要：
利用高斯近似下的累积量展开，数值研究了克尔介质中阻尼类孤子脉冲的内量子统计特性，包括窄谱脉冲分量和有限谱脉冲分量。结果表明，在一定条件下，吸收可以增强亚泊松统计，从而抑制某些相消干涉。此外，它示出的光子数相关性和相关的光子数方差之间的不同的脉冲分量可以是高度非经典的，即使是吸收光纤。确定了最佳的频率窗口，以实现强非经典行为，这提供了新的可能性，使用光纤中的孤子作为非经典相关光束的源。
英文摘要：
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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