# Conversion of Mechanical Noise into Correlated Photon Pairs: Dynamical Casimir effect from an incoherent mechanical drive

## TL;DR

This paper demonstrates that the dynamical Casimir effect can be realized in an optomechanical system driven by incoherent mechanical noise, using a quantum approach that accounts for zero and finite temperature reservoirs, enabling new experimental observations.

## Contribution

It introduces a quantum-mechanical model for the dynamical Casimir effect driven by incoherent mechanical pumping, expanding the understanding of its experimental feasibility.

## Key findings

- Dynamical Casimir effect observed with zero mean mechanical displacement
- Cavity emission spectra characterized in different regimes
- Effect persists at finite temperatures

## Abstract

We show that the dynamical Casimir effect in an optomechanical system can be achieved under incoherent mechanical pumping. We adopt a fully quantum-mechanical approach for both the cavity field and the oscillating mirror. The dynamics is then evaluated using a recently-developed master equation approach in the dressed picture, including both zero and finite temperature photonic reservoirs. This analysis shows that the dynamical Casimir effect can be observed even when the mean value of the mechanical displacement is zero. This opens up new possibilities for the experimental observation of this effect. We also calculate cavity emission spectra both in the resonant and the dispersive regimes, providing useful information on the emission process.