Dynamical Casimir Effect in cavity with N-level detector or N-1 two-level atoms
arXiv:1205.3472 · doi:10.1103/PhysRevA.86.015801
Abstract
We study the photon generation from vacuum via the Dynamical Casimir Effect in a cavity containing a N-level detector in equally-spaced resonant ladder configuration or N-1 identical resonant two-level atoms. If the modulation frequency equals exactly twice the unperturbed cavity frequency, the photon growth goes on steadily for odd N, while for even N at most N-2 photons can be generated. This finding is corroborated by numerical calculations. In the limit we obtain the harmonic oscillator model of the detector, which admits analytical results.
4+ pages, 3 figures