Fully Quantum Approach to Optomechanical Entanglement

TL;DR

This paper introduces a comprehensive quantum framework for optomechanical entanglement, surpassing previous fluctuation-based models, and demonstrates the creation of stable, high entanglement under various driving conditions.

Contribution

It presents a fully quantum approach to optomechanical entanglement that is applicable to arbitrary cavity drive, improving upon classical fluctuation models.

Findings

High, robust, and stable entanglement can be achieved in blue detuned regimes.

Quantum noise effects can cause entanglement sudden death and revival.

The approach applies to arbitrary cavity drive conditions.

Abstract

The radiation pressure induced coupling between an optical cavity field and a mechanical oscillator can create entanglement between them. In previous works this entanglement was treated as that of the quantum fluctuations of the cavity and mechanical modes around their classical mean values. Here we provide a fully quantum approach to optomechanical entanglement, which goes beyond the approximation of classical mean motion plus quantum fluctuation, and applies to arbitrary cavity drive. We illustrate the real-time evolution of optomechanical entanglement under drive of arbitrary detuning to show the existence of high, robust and stable entanglement in blue detuned regime, and highlight the quantum noise effects that can cause entanglement sudden death and revival.