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

doi:10.1103/PhysRevLett.128.230501

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

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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 language	English
Article number	230501
Journal	Physical Review Letters
Volume	128
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.128.230501
Publication status	Published - 6 Jun 2022

Bibliographical note

Funding Information:
We thank Krishna C. Balram, Patrick M. Birchall, Osian Wolley, and Gabriel R. Higgins for helpful discussions. A. B. acknowledges support from the EPSRC Grant No. EP/S023607/1. E. J. A. acknowledges support from an EPSRC doctoral prize from EP/R513179/1 and the Royal Academy of Engineering under the Research Fellowship scheme. J. C. F. M. acknowledges support from the EPSRC UK Quantum Technology Hub in Quantum Enhanced Imaging (QuantIC) EP/T00097X/1. A. B. and J. C. F. M. acknowledge support from the ERC starting Grant No. ERC-2018-STG 803665. All data needed to evaluate the conclusions of the paper are present in the main text and the Supplementary Information.

ASJC Scopus subject areas

General Physics and Astronomy

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https://research-information.bris.ac.uk/en/publications/the-advantage-of-coherent-states-in-ring-resonators-over-any-quan

Cite this

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

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.",

author = "Alexandre Belsley and Allen, {Euan J.} and Animesh Datta and Matthews, {Jonathan C.F.}",

note = "Funding Information: We thank Krishna C. Balram, Patrick M. Birchall, Osian Wolley, and Gabriel R. Higgins for helpful discussions. A. B. acknowledges support from the EPSRC Grant No. EP/S023607/1. E. J. A. acknowledges support from an EPSRC doctoral prize from EP/R513179/1 and the Royal Academy of Engineering under the Research Fellowship scheme. J. C. F. M. acknowledges support from the EPSRC UK Quantum Technology Hub in Quantum Enhanced Imaging (QuantIC) EP/T00097X/1. A. B. and J. C. F. M. acknowledge support from the ERC starting Grant No. ERC-2018-STG 803665. All data needed to evaluate the conclusions of the paper are present in the main text and the Supplementary Information. ",

year = "2022",

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AU - Matthews, Jonathan C.F.

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AB - 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.

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

Abstract

Bibliographical note

ASJC Scopus subject areas

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