Dynamics of bound vector solitons induced by stochastic perturbations: Soliton breakup and soliton switching

•Soliton breakup induced by homogenously stochastic perturbations.•Soliton switching induced by nonhomogenously stochastic perturbations.•Soliton dynamics in the linearly- and circularly-polarized light systems with stochastic perturbations.

We respectively investigate breakup and switching of the Manakov-typed bound vector solitons (BVSs) induced by two types of stochastic perturbations: the homogenous and nonhomogenous. Symmetry-recovering is discovered for the asymmetrical homogenous case, while soliton switching is found to relate with the perturbation amplitude and soliton coherence. Simulations show that soliton switching in the circularly-polarized light system is much weaker than that in the Manakov and linearly-polarized systems. In addition, the homogenous perturbations can enhance the soliton switching in both of the Manakov and non-integrable (linearly- and circularly-polarized) systems. Our results might be helpful in interpreting dynamics of the BVSs with stochastic noises in nonlinear optics or with stochastic quantum fluctuations in Bose–Einstein condensates.