Quantum Radiation from Superluminal Refractive-Index Perturbations
F. Belgiorno, Sergio L. Cacciatori, G. Ortenzi, V. G. Sala, Daniele Faccio · Physical Review Letters · 2010
We analyze in detail photon production induced by a superluminal refractive-index perturbation in realistic experimental operating conditions. The interaction between the refractive-index perturbation and the quantum vacuum fluctuations of the electromagnetic field leads to the production of photon pairs.