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Optomechanical Magnetometry with a Macroscopic Resonator

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Yu, Changqiu; Janousek, Jiri; Sheridan, Eoin; McAuslan, David L; Rubinsztein-Dunlop, Halina; Lam, Ping Koy; Zhang, Yundong; Bowen, Warwick

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We demonstrate a centimeter-scale optomechanical magnetometer based on a crystalline whispering-gallery-mode resonator. The large size of the resonator, with a magnetic-field integration volume of 0.45  cm3, allows high magnetic-field sensitivity to be achieved in the hertz-to-kilohertz frequency range. A peak sensitivity of 131  pT  Hz−1/2 is reported, in a magnetically unshielded noncryogenic environment using optical power levels beneath 100  μW. Femtotesla-range sensitivity may be possible...[Show more]

dc.contributor.authorYu, Changqiu
dc.contributor.authorJanousek, Jiri
dc.contributor.authorSheridan, Eoin
dc.contributor.authorMcAuslan, David L
dc.contributor.authorRubinsztein-Dunlop, Halina
dc.contributor.authorLam, Ping Koy
dc.contributor.authorZhang, Yundong
dc.contributor.authorBowen, Warwick
dc.date.accessioned2018-11-29T22:57:24Z
dc.date.available2018-11-29T22:57:24Z
dc.identifier.issn2331-7019
dc.identifier.urihttp://hdl.handle.net/1885/153855
dc.description.abstractWe demonstrate a centimeter-scale optomechanical magnetometer based on a crystalline whispering-gallery-mode resonator. The large size of the resonator, with a magnetic-field integration volume of 0.45  cm3, allows high magnetic-field sensitivity to be achieved in the hertz-to-kilohertz frequency range. A peak sensitivity of 131  pT  Hz−1/2 is reported, in a magnetically unshielded noncryogenic environment using optical power levels beneath 100  μW. Femtotesla-range sensitivity may be possible in future devices with the further optimization of laser noise and the physical structure of the resonator, allowing applications in high-performance magnetometry.
dc.format.mimetypeapplication/pdf
dc.publisherAmerican Physical Society
dc.sourcePhysical Review Applied
dc.titleOptomechanical Magnetometry with a Macroscopic Resonator
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume5
dc.date.issued2016
local.identifier.absfor020500 - OPTICAL PHYSICS
local.identifier.absfor020600 - QUANTUM PHYSICS
local.identifier.ariespublicationU3488905xPUB19743
local.type.statusPublished Version
local.contributor.affiliationYu, Changqiu, University of Queensland
local.contributor.affiliationJanousek, Jiri, College of Science, ANU
local.contributor.affiliationSheridan, Eoin, University of Queensland
local.contributor.affiliationMcAuslan, David L, University of Queensland
local.contributor.affiliationRubinsztein-Dunlop, Halina, University of Queensland
local.contributor.affiliationLam, Ping Koy, College of Science, ANU
local.contributor.affiliationZhang, Yundong, Harbin Institute of Technology
local.contributor.affiliationBowen, Warwick, University of Queensland
local.bibliographicCitation.issue4
local.identifier.doi10.1103/PhysRevApplied.5.044007
dc.date.updated2018-11-29T08:17:40Z
local.identifier.scopusID2-s2.0-84973460136
local.identifier.thomsonID000374299900002
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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