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Sub-Heisenberg estimation of non-random phase shifts

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dc.contributor.authorRivas Vargas, Ángel
dc.contributor.authorLuis Aina, Alfredo
dc.date.accessioned2023-06-20T03:52:13Z
dc.date.available2023-06-20T03:52:13Z
dc.date.issued2012
dc.description© IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. We are grateful to Professors A Smerzi, L Maccone, M Tsang and M J W Hall for useful discussions. We acknowledge financial support from the project QUITEMAD S2009-ESP-1594 of the Consejeria de Educacion de la Comunidad de Madrid. AR acknowledges support from MICINN FIS2009-10061. AL acknowledges support from project no. FIS2008-01267 of the Spanish Direccion General de Investigacion del Ministerio de Ciencia e Innovacion.
dc.description.abstractWe provide evidence that the uncertainty in detection of small and deterministic phase-shift deviations from a working point can be lower than the Heisenberg bound, for a fixed finite mean number of photons. We achieve that by exploiting nonlinearity of estimators and coherence with the vacuum.
dc.description.departmentDepto. de Óptica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipComunidad de Madrid
dc.description.sponsorshipMinisterio de Ciencia e Innovacion (MICINN), España
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/30351
dc.identifier.doi10.1088/1367-2630/14/9/093052
dc.identifier.issn1367-2630
dc.identifier.officialurlhttp://dx.doi.org/10.1088/1367-2630/14/9/093052
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/44589
dc.journal.titleNew journal of physics
dc.language.isoeng
dc.publisherIOP Publishing
dc.relation.projectIDQUITEMAD S2009-ESP-1594
dc.relation.projectIDFIS2009-10061
dc.relation.projectIDFIS2008-01267
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/
dc.subject.cdu535
dc.subject.keywordQuantum
dc.subject.keywordLikelihood
dc.subject.keywordLimit
dc.subject.keywordStatistics
dc.subject.ucmÓptica (Física)
dc.subject.unesco2209.19 Óptica Física
dc.titleSub-Heisenberg estimation of non-random phase shifts
dc.typejournal article
dc.volume.number14
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