Stochastic parity-time-symmetric coupler
Stochastic parity-time-symmetric coupler
We introduce a stochastic ${\cal PT}$-symmetric coupler, which is based on dual-core waveguides with fluctuating parameters, such that the gain and the losses are exactly balanced in average. We consider different parametric regimes which correspond to the broken and unbroken ${\cal PT}$ symmetry, as well as to the exceptional point …