Robust entanglement of a micromechanical resonator with output optical fields
Abstract
We perform an analysis of the optomechanical entanglement between the experimentally detectable output field of an optical cavity and a vibrating cavity end-mirror. We show that by a proper choice of the readout (mainly by a proper choice of detection bandwidth) one can not only detect the already predicted intracavity entanglement but also optimize and increase it. This entanglement is explained as being generated by a scattering process owing to which strong quantum correlations between the mirror and the optical Stokes sideband are created. All-optical entanglement between scattered sidebands is also predicted and it is shown that the mechanical resonator and the two sideband modes form a fully tripartite-entangled system capable of providing practicable and robust solutions for continuous variable quantum communication protocols.
Cite
@article{arxiv.0806.2045,
title = {Robust entanglement of a micromechanical resonator with output optical fields},
author = {C. Genes and A. Mari and P. Tombesi and D. Vitali},
journal= {arXiv preprint arXiv:0806.2045},
year = {2009}
}