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.

Funding

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. ",

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

Abstract

Bibliographical note

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