---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '22958'
abstract:
- lang: eng
  text: "We propose a sensing scheme for detecting weak forces that achieves sensitivity
    scaling proportional to the number of individual sensors without relying on entanglement
    or other non-classical resources. Our scheme utilizes coherent averaging across
    a chain of \r\n optomechanical cavities, unidirectionally coupled via a laser
    beam. As the beam passes through the cavities, it accumulates phase shifts induced
    by a common external force acting on the mechanical elements. Remarkably, this
    fully classical approach achieves the sensitivity scaling typically associated
    with quantum-enhanced protocols, providing a robust and experimentally feasible
    route to precision sensing. Potential applications range from high-sensitivity
    gravitational field measurements at the Large Hadron Collider to probing dark
    matter interactions and detecting gravitational waves. This work opens a new pathway
    for leveraging coherent light-matter interactions for force sensing."
acknowledgement: 'We thank Germain Tobar, Navdeep Arya, Magdalena Zych, Teodor Strömberg
  and Onur Hosten for useful discussions. M M M acknowledges support from the Walter
  Benjamin Programme (Project Number 510053905) and from the Austrian Science Fund
  (FWF) [10.55776/COE1]. DB acknowledges funding by the EU EIC Pathfinder project
  QuCoM (101046973). D R acknowledges funding by the Federal Ministry of Education
  and Research of Germany in the project ‘Open6GHub’ (Grant Number: 16KISK016), financial
  support from EPSRC (Engineering & Physical Sciences Research Council, United Kingdom)
  Grant Number EP/X009467/1, and support by the Deutsche Forschungsgemeinschaft (DFG,
  German Research Foundation) under Germany’s Excellence Strategy—EXC-2123 QuantumFrontiers
  - 390837967.'
article_number: '084505'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Marta M
  full_name: Marchese, Marta M
  id: fdac3bd4-d1c1-11ef-aaa4-fad05dc21577
  last_name: Marchese
- first_name: Daniel
  full_name: Braun, Daniel
  last_name: Braun
- first_name: Stefan
  full_name: Nimmrichter, Stefan
  last_name: Nimmrichter
- first_name: Dennis
  full_name: Rätzel, Dennis
  last_name: Rätzel
citation:
  ama: Marchese MM, Braun D, Nimmrichter S, Rätzel D. Cascaded optomechanical sensing
    for small signals. <i>New Journal of Physics</i>. 2026;28(8). doi:<a href="https://doi.org/10.1088/1367-2630/ae8b16">10.1088/1367-2630/ae8b16</a>
  apa: Marchese, M. M., Braun, D., Nimmrichter, S., &#38; Rätzel, D. (2026). Cascaded
    optomechanical sensing for small signals. <i>New Journal of Physics</i>. IOP Publishing.
    <a href="https://doi.org/10.1088/1367-2630/ae8b16">https://doi.org/10.1088/1367-2630/ae8b16</a>
  chicago: Marchese, Marta M, Daniel Braun, Stefan Nimmrichter, and Dennis Rätzel.
    “Cascaded Optomechanical Sensing for Small Signals.” <i>New Journal of Physics</i>.
    IOP Publishing, 2026. <a href="https://doi.org/10.1088/1367-2630/ae8b16">https://doi.org/10.1088/1367-2630/ae8b16</a>.
  ieee: M. M. Marchese, D. Braun, S. Nimmrichter, and D. Rätzel, “Cascaded optomechanical
    sensing for small signals,” <i>New Journal of Physics</i>, vol. 28, no. 8. IOP
    Publishing, 2026.
  ista: Marchese MM, Braun D, Nimmrichter S, Rätzel D. 2026. Cascaded optomechanical
    sensing for small signals. New Journal of Physics. 28(8), 084505.
  mla: Marchese, Marta M., et al. “Cascaded Optomechanical Sensing for Small Signals.”
    <i>New Journal of Physics</i>, vol. 28, no. 8, 084505, IOP Publishing, 2026, doi:<a
    href="https://doi.org/10.1088/1367-2630/ae8b16">10.1088/1367-2630/ae8b16</a>.
  short: M.M. Marchese, D. Braun, S. Nimmrichter, D. Rätzel, New Journal of Physics
    28 (2026).
corr_author: '1'
das_tickbox: '1'
dataavailabilitystatement: All data that support the findings of this study are included
  within the article (and any supplementary files).
date_created: 2026-09-17T11:06:23Z
date_published: 2026-08-13T00:00:00Z
date_updated: 2026-10-01T09:19:39Z
day: '13'
ddc:
- '530'
department:
- _id: OnHo
doi: 10.1088/1367-2630/ae8b16
external_id:
  arxiv:
  - '2602.08981'
file:
- access_level: open_access
  checksum: b932d9f4bac1a2f6777e41d884b7b703
  content_type: application/pdf
  creator: dernst
  date_created: 2026-10-01T09:17:19Z
  date_updated: 2026-10-01T09:17:19Z
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file_date_updated: 2026-10-01T09:17:19Z
fulldoi: https://doi.org/10.1088/1367-2630/ae8b16
has_accepted_license: '1'
intvolume: '        28'
issue: '8'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 3b79db15-b029-11f1-a721-dbd41d892ec2
  grant_number: COE01
  name: Quantum Science Austria (Hosten)
publication: New Journal of Physics
publication_identifier:
  eissn:
  - 1367-2630
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: yes
title: Cascaded optomechanical sensing for small signals
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 28
year: '2026'
...