Witnessing quantumness in mesoscopic objects is an important milestone for both quantum technologies and foundational reasons. Cavity optomechanics offers the ideal system to achieve this by combing high precision optical measurements with mechanical oscillators. However, mechanical quantumness can only be established if the behaviour is incompatible with any classical description of an oscillator. After explicitly considering classical and hybrid quantum-classical descriptions of an optomechanical system, we rule out squeezing of the optical field as such a witness by showing it is also predicted without quantizing the mechanical oscillator.
@article{arxiv.1811.04025,
title = {Optical squeezing for an optomechanical system without quantising the mechanical motion},
author = {Yue Ma and Federico Armata and Kiran E. Khosla and M. S. Kim},
journal= {arXiv preprint arXiv:1811.04025},
year = {2020}
}
Comments
11 pages, 6 figures including appendix, accepted by Physical Review Research