Advantage of Coherent States in Ring Resonators over Any Quantum Probe Single-Pass Absorption Estimation Strategy

Alexandre Belsley, Euan J. Allen, Animesh Datta, Jonathan C.F. Matthews

Research output: Contribution to journalArticlepeer-review

4 Citations (SciVal)

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.

Original languageEnglish
Article number230501
JournalPhysical Review Letters
Volume128
Issue number23
DOIs
Publication statusPublished - 10 Jun 2022

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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