A novel regime for the dynamical Casimir effect

TL;DR

This paper introduces new resonance conditions for the dynamical Casimir effect, enabling optical photon production with lower mechanical frequencies than previously possible, through stability analysis and numerical simulations.

Contribution

It presents novel resonance conditions for DCE that allow photon generation at lower mechanical frequencies, expanding the understanding of the effect.

Findings

Identification of new resonance conditions for DCE

Demonstration of photon production at lower mechanical frequencies

Numerical analysis of photon number evolution in unstable regimes

Abstract

The dynamical Casimir effect (DCE) is the production of photons by the amplification of vacuum fluctuations. In this paper we demonstrate new resonance conditions in DCE that potentially allow the production of optical photons when the mechanical frequency is smaller than the lowest frequency of the cavity field. We consider a cavity with one mirror fixed and the other allowed to oscillate. In order to identify the region where production of photons takes place, we do a linear stability analysis and investigate the dynamic stability of the system under small fluctuations. By using a numerical solution of the Heisenberg equations of motion, the time evolution of the number of photons produced in the unstable region is studied.