Quantum decay of an optical soliton

Optical solitons are known to be classically stable objects which robust perturbations. In this work, we show that due quantum mechanical effects, an optical soliton is initially in a classical coherent state will shed photons into the continuum and hence decay. The standard formulation of quantized uses linearized version nonlinear Schrodinger equation background soliton, remains approximation. We if higher-order interaction terms taken account, no longer stable, its photon number decreases quadratically as function cycles. compute power spectrum for radiation find narrow band localized about initial momentum with cut-off inversely proportional width.