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Quantum-limited mirror-motion estimation

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Iwasawa, Kohjiro; Makino, Kenzo; Yonezawa, Hidehiro; Tsang, Mankei; Davidovic, A; Huntington, Elanor Harriet; Furusawa, Akira

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We experimentally demonstrate optomechanical motion and force measurements near the quantum precision limits set by the quantum Cramér-Rao bounds. Optical beams in coherent and phase-squeezed states are used to measure the motion of a mirror under an external stochastic force. Utilizing optical phase tracking and quantum smoothing techniques, we achieve position, momentum, and force estimation accuracies close to the quantum Cramér-Rao bounds with the coherent state, while the estimation using...[Show more]

dc.contributor.authorIwasawa, Kohjiro
dc.contributor.authorMakino, Kenzo
dc.contributor.authorYonezawa, Hidehiro
dc.contributor.authorTsang, Mankei
dc.contributor.authorDavidovic, A
dc.contributor.authorHuntington, Elanor Harriet
dc.contributor.authorFurusawa, Akira
dc.date.accessioned2018-11-29T22:53:17Z
dc.date.available2018-11-29T22:53:17Z
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/1885/152425
dc.description.abstractWe experimentally demonstrate optomechanical motion and force measurements near the quantum precision limits set by the quantum Cramér-Rao bounds. Optical beams in coherent and phase-squeezed states are used to measure the motion of a mirror under an external stochastic force. Utilizing optical phase tracking and quantum smoothing techniques, we achieve position, momentum, and force estimation accuracies close to the quantum Cramér-Rao bounds with the coherent state, while the estimation using squeezed states shows clear quantum enhancements beyond the coherent-state bounds.
dc.format.mimetypeapplication/pdf
dc.publisherAmerican Physical Society
dc.sourcePhysical Review Letters
dc.subjectKeywords: Coherent state; Force estimation; Optical phase; Optomechanical; Precision limits; Smoothing techniques; Squeezed state; Stochastic forces; Mirrors; Motion estimation; Quantum theory
dc.titleQuantum-limited mirror-motion estimation
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume111
dc.date.issued2013
local.identifier.absfor090602 - Control Systems, Robotics and Automation
local.identifier.absfor020604 - Quantum Optics
local.identifier.ariespublicationU3488905xPUB4709
local.type.statusPublished Version
local.contributor.affiliationIwasawa, Kohjiro, University of Tokyo
local.contributor.affiliationMakino, Kenzo, University of Tokyo
local.contributor.affiliationYonezawa, Hidehiro, University of Tokyo
local.contributor.affiliationTsang, Mankei, National University of Singapore
local.contributor.affiliationDavidovic, A, University of New South Wales, ADFA
local.contributor.affiliationHuntington, Elanor Harriet, College of Engineering and Computer Science, ANU
local.contributor.affiliationFurusawa, Akira, University of Tokyo
local.bibliographicCitation.issue16
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage5
local.identifier.doi10.1103/PhysRevLett.111.163602
dc.date.updated2018-11-29T07:51:32Z
local.identifier.scopusID2-s2.0-84886263472
local.identifier.thomsonID000326148000010
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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