Modelling superradiant amplification of Casimir photons in very low dissipation cavities

TL;DR

This paper models the superradiant amplification of Casimir photons in low-dissipation cavities, proposing a method to detect these photons via superradiant bursts in atomic beams, with simulations optimizing detection parameters.

Contribution

It introduces a detailed simulation framework for superradiance in low-loss cavities to enhance Casimir photon detection capabilities.

Findings

Superradiant evolution is slower in low-dissipation cavities.

Optimal parameters for Casimir photon detection are identified.

Superradiance can be sustained when lifetime is shorter than dissipation time.

Abstract

Recent advances in nanotechnology and atomic physics may allow for a demonstration of the dynamical Casimir effect. An array of film bulk acoustic resonators (FBARs) coherently driven at twice the resonant frequency of a high-quality electromagnetic cavity can generate a stationary state of Casimir photons. These are detected using an alkali atom beam prepared in an inverted population of hyperfine states, with an induced superradiant burst producing a detectable radio-frequency signal. We describe here the results of the simulations of the dynamics of superradiance and superfluorescence, with the aim to optimize the parameters for the detectability of Casimir photons. When the superradiant lifetime is shorter than the dissipation time, we find superradiant evolution to be similar in character but dramatically slower than in the usual lossy case.