Symmetry Breaking Bifurcation of Two-Component Soliton Modes in an Inverted Nonlinear Random Lattice

We study two component solitons in an inverted virtual lattice induced by electromagnetically induced transparency with a random spatial modulation of the density of the potential and the linear coupling between the two components. The randomness can be introduced by a random doping of the active atoms. Solitons and the symmetry breaking of the two components are investigated numerically. By changing the strength of the randomly modulated linear coupling, C0, the location of the solitons can be manipulated and the behavior shows a power P dependence. Compared to an inverted lattice with periodical modulation, the scenario of the SSB process is altered by the random modulation and the number of times that SSB occurs can be manipulated by adjusting the total power.

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