Interferometric sensing of the tilt angle of a Gaussian beam

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dc.creatorStephen Patrick Walborn
dc.creatorGabriel Horacio Aguilar
dc.creatorPablo Lima Saldanha
dc.creatorLuiz Davidovich
dc.creatorRuynet Lima de Matos Filho
dc.date.accessioned2026-03-17T18:15:08Z
dc.date.issued2020-08-04
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPERJ - Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
dc.identifier.doihttps://doi.org/10.1103/PhysRevResearch.2.033191
dc.identifier.issn2643-1564
dc.identifier.urihttps://hdl.handle.net/1843/2196
dc.languageInglêspt_BR
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review Research
dc.rightsAcesso aberto
dc.subjectÓtica
dc.subjectInterferometria
dc.subject.otherClassical optics
dc.subject.otherOptical coherence
dc.subject.otherQuantum metrology
dc.subject.otherQuantum sensing
dc.titleInterferometric sensing of the tilt angle of a Gaussian beam
dc.typeArtigo de periódico
local.citation.epage033191-8
local.citation.spage033191-1
local.citation.volume2
local.creator.Latteshttps://lattes.cnpq.br/6700549732515840
local.creator.Latteshttps://lattes.cnpq.br/7481641434906096
local.creator.Latteshttps://lattes.cnpq.br/8040936966256967
local.creator.Latteshttp://lattes.cnpq.br/2112374695114747
local.creator.Latteshttp://lattes.cnpq.br/8961787405979855
local.description.resumoWe investigate interferometric techniques to estimate the deflection angle of an optical beam and compare them to the direct detection of the beam deflection. We show that quantum metrology methods lead to a unifying treatment for both single photons and classical fields. Using the Fisher information to assess the precision limits of the interferometric schemes, we show that the precision can be increased by exploiting the initial transverse displacement of the beam. This gain, which is present for both Sagnac and Mach-Zehnder-like configurations, can be considerable when compared to noninterferometric methods. In addition to the fundamental increase in precision, the interferometric schemes have the technical advantage that (i) the precision limits can be saturated by a sole polarization measurement on the field, and that (ii) the detection system can be placed at any longitudinal position along the beam. We also consider position-dependent polarization measurements, and show that in this case the precision increases with the propagation distance, as well as the initial transverse displacement.
local.identifier.orcidhttps://orcid.org/0000-0002-3346-8625
local.identifier.orcidhttps://orcid.org/0000-0002-3457-506X
local.identifier.orcidhttps://orcid.org/0000-0002-1844-0771
local.identifier.orcidhttps://orcid.org/0000-0002-4418-3086
local.identifier.orcidhttps://orcid.org/0000-0002-7514-141X
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.subject.cnpqCIENCIAS EXATAS E DA TERRA::FISICA::FISICA GERAL::FISICA CLASSICA E FISICA QUANTICA MECANICA E CAMPOS
local.url.externahttps://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.2.033191

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