Advantage of Coherent States in Ring Resonators over Any Quantum Probe Single-Pass Absorption Estimation Strategy
Quantum Physics
2022-06-09 v3 Optics
Abstract
Quantum states of light have been shown to enhance precision in absorption estimation over classical strategies. By exploiting interference and resonant enhancement effects, we show that coherent-state probes in all-pass ring resonators can outperform any quantum probe single-pass strategy even when normalized by the mean input photon number. We also find that under optimal conditions coherent-state probes equal the performance of arbitrarily bright pure single-mode squeezed probes in all-pass ring resonators.
Keywords
Cite
@article{arxiv.2112.07557,
title = {Advantage of Coherent States in Ring Resonators over Any Quantum Probe Single-Pass Absorption Estimation Strategy},
author = {Alexandre Belsley and Euan J. Allen and Animesh Datta and Jonathan C. F. Matthews},
journal= {arXiv preprint arXiv:2112.07557},
year = {2022}
}
Comments
7 pages, 4 figures, typos corrected, expanded section 3 and conclusion