Nonstationary Casimir effect in cavities with two resonantly coupled modes

Details Nonstationary Casimir effect in cavities with two resonantly coupled modes Nonstationary Casimir effect in cavities with two resonantly coupled modes

2001-09-04

arxiv.org/abs/quant-ph/0109019v1

Physics Letters A, v.289, no.6, p.291-300 (2001)

Physics

Quantum Physics

17 pages, 5 ps figures, LaTex, accepted for publication in Physics Letters A

Scientific paper

10.1016/S0375-9601(01)00626-0

We study the peculiarities of the nonstationary Casimir effect (creation of photons in cavities with moving boundaries) in the special case of two resonantly coupled modes with frequencies $\omega_0$ and $(3\Delta)\omega_0$, parametrically excited due to small amplitude oscillations of the ideal cavity wall at the frequency $2\omega_0(1\delta)$ (with $|\delta|,|\Delta|\ll 1$). The effects of thermally induced oscillations in time dependences of the mean numbers of created photons and the exchange of quantum purities between the modes are discovered. Squeezing and photon distributions in each modes are calculated for initial vacuum and thermal states. A possibility of compensation of detunings is shown.

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