Quantum Optomechanics beyond Linearization

TL;DR

This paper develops a theoretical framework to analyze the quantum dynamics of optomechanical systems beyond linear approximations, especially in the strong coupling regime with single-photon driving, revealing oscillatory behaviors and noise effects.

Contribution

It introduces a novel approach to study genuine quantum states of optomechanical systems in the strong coupling regime, extending beyond traditional linearization methods.

Findings

Steady quantum states exhibit periodic oscillations under strong coupling.

Cavity noise significantly influences system observables.

The approach enables analysis of quantum dynamics beyond classical steady states.

Abstract

The quantum dynamics of optomechanical systems was mostly studied for their fluctuations around classical steady states. We present a theoretical approach to determining the system observables of optomechanical systems as genuine quantum objects, for example, a coupled quantum mechanical oscillator to a cavity single photon. In this approach we study the dynamics of such systems in strong coupling regime. We find that, under strong optomechanical coupling, steady quantum states of optomechanical systems driven by continuous-wave single photons exhibit periodic oscillation and cavity noise considerably affects system observables.