Quantum dynamics of a vibrational mode of a membrane within an optical cavity

TL;DR

This paper investigates the quantum dynamics of a membrane's vibrational mode within an optical cavity, demonstrating potential for stable entanglement and optical bistability, relevant for quantum information applications.

Contribution

It introduces a model for optomechanical entanglement in a membrane-in-the-middle cavity, including effects of optical absorption, and presents preliminary experimental evidence of radiation-pressure effects.

Findings

Robust stationary optomechanical entanglement achievable despite absorption.

Optical bistability observed due to radiation-pressure effects.

Potential for quantum information interfaces using membrane-based optomechanics.

Abstract

Optomechanical systems are a promising candidate for the implementation of quantum interfaces for storing and redistributing quantum information. Here we focus on the case of a high-finesse optical cavity with a thin vibrating semitransparent membrane in the middle. We show that robust and stationary optomechanical entanglement could be achieved in the system, even in the presence of nonnegligible optical absorption in the membrane. We also present some preliminary experimental data showing radiation-pressure induced optical bistability.