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Backaction suppression in levitated optomechanics using reflective boundaries

Rafat Gajewski, James Bateman Orcid Logo

Physical Review Research, Volume: 7, Issue: 2, Start page: 023041

Swansea University Authors: Rafat Gajewski, James Bateman Orcid Logo

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DOI (Published version): 10.1103/physrevresearch.7.023041

Abstract

We show theoretically that the noise due to laser induced backaction acting on a small nanosphere levitated in a standing-wave trap can be considerably reduced by utilizing a suitable reflective boundary. We examine the spherical mirror geometry as a case study of this backaction suppression effect,...

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Published in: Physical Review Research
ISSN: 2643-1564
Published: American Physical Society (APS) 2025
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URI: https://cronfa.swan.ac.uk/Record/cronfa69040
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spelling 2025-06-06T15:06:45.3446640 v2 69040 2025-03-06 Backaction suppression in levitated optomechanics using reflective boundaries ebb49c12978ad2015f44a97b049f09ba Rafat Gajewski Rafat Gajewski true false 3b46126aa511514414c6c42c9c6f0654 0000-0003-4885-2539 James Bateman James Bateman true false 2025-03-06 We show theoretically that the noise due to laser induced backaction acting on a small nanosphere levitated in a standing-wave trap can be considerably reduced by utilizing a suitable reflective boundary. We examine the spherical mirror geometry as a case study of this backaction suppression effect, discussing the theoretical and experimental constraints. We study the effects of laser recoil directly, by analyzing optical force fluctuations acting on a dipolar particle trapped at the center of a spherical mirror. We also compute the corresponding measurement imprecision in an interferometric, shot-noise-limited position measurement, using the formalism of Fisher information flow. Our results show that the standing-wave trapping field is necessary for backaction suppression in three dimensions, and they satisfy the Heisenberg limit of detection. Journal Article Physical Review Research 7 2 023041 American Physical Society (APS) 2643-1564 11 4 2025 2025-04-11 10.1103/physrevresearch.7.023041 COLLEGE NANME COLLEGE CODE Swansea University External research funder(s) paid the OA fee (includes OA grants disbursed by the Library) R.G. was supported by the U.K. Engineering and Physical Sciences Research Council through a Standard Research Studentship (Doctoral Training Partnership) Grant No. EP/T517987/1. 2025-06-06T15:06:45.3446640 2025-03-06T10:08:36.4543899 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Rafat Gajewski 1 James Bateman 0000-0003-4885-2539 2 69040__34387__4387363499e04a188335017e1d37c394.pdf 69040.VOR.pdf 2025-06-03T15:27:45.0865055 Output 979692 application/pdf Version of Record true Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. true eng https://creativecommons.org/licenses/by/4.0/
title Backaction suppression in levitated optomechanics using reflective boundaries
spellingShingle Backaction suppression in levitated optomechanics using reflective boundaries
Rafat Gajewski
James Bateman
title_short Backaction suppression in levitated optomechanics using reflective boundaries
title_full Backaction suppression in levitated optomechanics using reflective boundaries
title_fullStr Backaction suppression in levitated optomechanics using reflective boundaries
title_full_unstemmed Backaction suppression in levitated optomechanics using reflective boundaries
title_sort Backaction suppression in levitated optomechanics using reflective boundaries
author_id_str_mv ebb49c12978ad2015f44a97b049f09ba
3b46126aa511514414c6c42c9c6f0654
author_id_fullname_str_mv ebb49c12978ad2015f44a97b049f09ba_***_Rafat Gajewski
3b46126aa511514414c6c42c9c6f0654_***_James Bateman
author Rafat Gajewski
James Bateman
author2 Rafat Gajewski
James Bateman
format Journal article
container_title Physical Review Research
container_volume 7
container_issue 2
container_start_page 023041
publishDate 2025
institution Swansea University
issn 2643-1564
doi_str_mv 10.1103/physrevresearch.7.023041
publisher American Physical Society (APS)
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
active_str 0
description We show theoretically that the noise due to laser induced backaction acting on a small nanosphere levitated in a standing-wave trap can be considerably reduced by utilizing a suitable reflective boundary. We examine the spherical mirror geometry as a case study of this backaction suppression effect, discussing the theoretical and experimental constraints. We study the effects of laser recoil directly, by analyzing optical force fluctuations acting on a dipolar particle trapped at the center of a spherical mirror. We also compute the corresponding measurement imprecision in an interferometric, shot-noise-limited position measurement, using the formalism of Fisher information flow. Our results show that the standing-wave trapping field is necessary for backaction suppression in three dimensions, and they satisfy the Heisenberg limit of detection.
published_date 2025-04-11T05:27:08Z
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score 11.089386

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