Dark states of a moving mirror in the single-photon strong-coupling regime

TL;DR

This paper explores the existence of dark states in an optomechanical system with a moving mirror under single-photon strong-coupling, revealing quantum coherence effects that decouple the cavity from external fields.

Contribution

It demonstrates the presence of dark states in a driven optomechanical system within the single-photon strong-coupling regime, highlighting their quantum coherence origin.

Findings

Dark states cause cavity decoupling from external fields

Dark states arise at resonance conditions in the strong-coupling regime

Optical pumping can generate these dark states

Abstract

We investigate an optomechanical system in which a cavity with a moving mirror is driven by two external fields. When the field frequencies match resonance conditions, we show that there exists a class of dark states of the moving mirror in the single-photon strong-coupling regime. These dark states, which cause the cavity to be decoupled from the external fields, is a manifestation of quantum coherence associated with the mirror's mechanical degrees of freedom. We discuss the properties of the dark states and indicate how they can be generated by optical pumping due to the decay of cavity field.