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

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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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
Number of pages	7
Journal	Physical Review Letters
Volume	128
Issue number	23
Early online date	6 Jun 2022
DOIs	https://doi.org/10.1103/PhysRevLett.128.230501
Publication status	Published - 10 Jun 2022

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Bristol Quantum Information Institute
QETLabs

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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.",

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AU - Belsley, Alexandre

AU - Allen, Euan J

AU - Datta, Animesh

AU - Matthews, Jonathan C F

PY - 2022/6/10

Y1 - 2022/6/10

N2 - 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.

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.

U2 - 10.1103/PhysRevLett.128.230501

DO - 10.1103/PhysRevLett.128.230501

M3 - Article (Academic Journal)

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SN - 0031-9007

VL - 128

JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

M1 - 230501

ER -

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

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