Quantum noise limits on spatial soliton propagation
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abstract
Quantum noise effect in spatial soliton propagation is discussed, where vacuum fluctuations are amplified by four-wave mixing and can grow to change the propagation characteristics of spatial solitons. Weak perturbations propagating with a strong wave can see gain in a self-focusing material through four-wave mixing which leads to beam filamentation process. Undesirable wave-vector components can grow from vacuum noise at the expense of the spatial soliton. These components randomly affect the soliton's mean wave vector and can cause perturbations in the soliton's propagation path.
