Bona fide stochastic resonance without periodic forcing*

We report on the synchronization of Brownian particles in nanoscale bistable potentials in the presence of correlated Poisson noise, with mean interval τ_P and correlation time τ_c, mimicking an active bath. The residence time distribution of the particle displays a series of peaks at integral multiples of τ_P. The peaks are maximal when the mean residence time τ_d matches the active noise time scales, 4τ_c≈τ_P≈τ_d/2, thereby demonstrating bona fide stochastic resonance in the absence of periodic force.  Additionally, we show that generic stochastic resonance under periodic forcing, known to degrade in strongly correlated continuous noise, is recovered by the discrete nonGaussian kicks.