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We show two examples in which the dynamical Casimir effect can be achieved bymodulating the Kerr or higher order nonlinearities. In the first case thecavity field is coupled to an arbitrary number of qubits or an harmonicoscillator via the dipole interaction. In the second case, the modulation ofthe nonlinearities is accompanied by the off-resonance modulation of the cavityfrequency. We present the analytic description of the phenomenon and supplementit with numeric simulations, demonstrating that photons can be created fromvacuum and the resulting hyper-Poissonian photon statistics is very differentfrom the squeezed vacuum state.

Dynamical Casimir effect via modulated Kerr or higher nonlinearities