Quantum Noise in Conventional Optical Heterodyne Devices
Quantum Physics
2014-11-03 v2
Abstract
By invoking the quantum theory of optical coherence, we theoretically show that the quantum noise in conventional optical heterodyne devices, which were previously identified as usual phase-insensitive amplifiers with additional quantum noise, is similar to that in optical homodyne devices, as verified by experimental data. Albeit more study is demanded to understand this result, it is certain that neither the uncertainty principle nor Caves's theorem for quantum noise of linear amplifiers sets a limit to the quantum noise of heterodyne devices.
Cite
@article{arxiv.1301.4787,
title = {Quantum Noise in Conventional Optical Heterodyne Devices},
author = {Dechao He and Boya Xie and Yu Xiao and Sheng Feng},
journal= {arXiv preprint arXiv:1301.4787},
year = {2014}
}
Comments
This paper has been withdrawn by the authors due to lack of sufficient data to support their conclusion