---
APC_amount: 2933,65 EUR
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '14980'
abstract:
- lang: eng
  text: Precision sensing and manipulation of milligram-scale mechanical oscillators
    has attracted growing interest in the fields of table-top explorations of gravity
    and tests of quantum mechanics at macroscopic scales. Torsional oscillators present
    an opportunity in this regard due to their remarked isolation from environmental
    noise. For torsional motion, an effective employment of optical cavities to enhance
    optomechanical interactions—as already established for linear oscillators—so far
    faced certain challenges. Here, we propose a concept for sensing and manipulating
    torsional motion, where exclusively the torsional rotations of a pendulum are
    mapped onto the path length of a single two-mirror optical cavity. The concept
    inherently alleviates many limitations of previous approaches. A proof-of-principle
    experiment is conducted with a rigidly controlled pendulum to explore the sensing
    aspects of the concept and to identify practical limitations in a potential state-of-the
    art setup. Based on this study, we anticipate development of precision torque
    sensors utilizing torsional pendulums that can support sensitivities below 10−19Nm/√Hz,
    while the motion of the pendulums are dominated by quantum radiation pressure
    noise at sub-microwatts of incoming laser power. These developments will provide
    horizons for experiments at the interface of quantum mechanics and gravity.
acknowledgement: "We thank Pere Rosselló for his contributions to the initial modeling
  of the presented sensing technique. This work was supported by Institute of Science
  and Technology Austria, and\r\nthe European Research Council under Grant No. 101087907
  (ERC CoG QuHAMP)."
article_number: '013141'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Sofya
  full_name: Agafonova, Sofya
  id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80
  last_name: Agafonova
  orcid: 0000-0003-0582-2946
- first_name: Umang
  full_name: Mishra, Umang
  id: 4328fa4c-f128-11eb-9611-c107b0fe4d51
  last_name: Mishra
- first_name: Fritz R
  full_name: Diorico, Fritz R
  id: 2E054C4C-F248-11E8-B48F-1D18A9856A87
  last_name: Diorico
  orcid: 0000-0002-4947-8924
- first_name: Onur
  full_name: Hosten, Onur
  id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
  last_name: Hosten
  orcid: 0000-0002-2031-204X
citation:
  ama: Agafonova S, Mishra U, Diorico FR, Hosten O. Zigzag optical cavity for sensing
    and controlling torsional motion. <i>Physical Review Research</i>. 2024;6(1).
    doi:<a href="https://doi.org/10.1103/physrevresearch.6.013141">10.1103/physrevresearch.6.013141</a>
  apa: Agafonova, S., Mishra, U., Diorico, F. R., &#38; Hosten, O. (2024). Zigzag
    optical cavity for sensing and controlling torsional motion. <i>Physical Review
    Research</i>. American Physical Society. <a href="https://doi.org/10.1103/physrevresearch.6.013141">https://doi.org/10.1103/physrevresearch.6.013141</a>
  chicago: Agafonova, Sofia, Umang Mishra, Fritz R Diorico, and Onur Hosten. “Zigzag
    Optical Cavity for Sensing and Controlling Torsional Motion.” <i>Physical Review
    Research</i>. American Physical Society, 2024. <a href="https://doi.org/10.1103/physrevresearch.6.013141">https://doi.org/10.1103/physrevresearch.6.013141</a>.
  ieee: S. Agafonova, U. Mishra, F. R. Diorico, and O. Hosten, “Zigzag optical cavity
    for sensing and controlling torsional motion,” <i>Physical Review Research</i>,
    vol. 6, no. 1. American Physical Society, 2024.
  ista: Agafonova S, Mishra U, Diorico FR, Hosten O. 2024. Zigzag optical cavity for
    sensing and controlling torsional motion. Physical Review Research. 6(1), 013141.
  mla: Agafonova, Sofia, et al. “Zigzag Optical Cavity for Sensing and Controlling
    Torsional Motion.” <i>Physical Review Research</i>, vol. 6, no. 1, 013141, American
    Physical Society, 2024, doi:<a href="https://doi.org/10.1103/physrevresearch.6.013141">10.1103/physrevresearch.6.013141</a>.
  short: S. Agafonova, U. Mishra, F.R. Diorico, O. Hosten, Physical Review Research
    6 (2024).
corr_author: '1'
das_tickbox: '0'
date_created: 2024-02-12T11:42:18Z
date_published: 2024-02-05T00:00:00Z
date_updated: 2026-07-08T07:52:51Z
day: '05'
ddc:
- '530'
department:
- _id: OnHo
doi: 10.1103/physrevresearch.6.013141
external_id:
  arxiv:
  - '2306.12804'
file:
- access_level: open_access
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  creator: dernst
  date_created: 2024-02-12T11:46:50Z
  date_updated: 2024-02-12T11:46:50Z
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  file_name: 2024_PhysicalRevResearch_Agafonova.pdf
  file_size: 1437167
  relation: main_file
  success: 1
file_date_updated: 2024-02-12T11:46:50Z
has_accepted_license: '1'
intvolume: '         6'
issue: '1'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
project:
- _id: bdb2a702-d553-11ed-ba76-f12e3e5a3bc6
  grant_number: '101087907'
  name: 'A quantum hybrid of atoms and milligram-scale pendulums: towards gravitational
    quantum mechanics'
publication: Physical Review Research
publication_identifier:
  eissn:
  - 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: no
title: Zigzag optical cavity for sensing and controlling torsional motion
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: 68b8ca59-c5b3-11ee-8790-cd641c68093d
volume: 6
year: '2024'
...