Experimentally quantifying the advantages of weak-values-based metrology

Gerardo I. Viza, Julián Martínez-Rincón, Gabriel B. Alves, Andrew N. Jordan, John C. Howell

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


We measure small optical beam deflections both using a Sagnac interferometer with a monitored dark port (the weak-values-based technique), or by focusing the entire beam to a split detector (the standard technique). By introducing controlled external modulations we quantify the mitigation of these sources in the weak values-based experiment versus the standard focusing experiment. In all cases, the weak-values technique out performs the standard technique by up to two orders of magnitude in precision for our parameters. We also show by post-selecting on 1% of the photons, we obtain 99% of the available Fisher information.

Original languageAmerican English
Title of host publicationCLEO
Subtitle of host publicationQELS - Fundamental Science, CLEO_QELS 2015
PublisherOptical Society of America
ISBN (Electronic)9781557529688
StatePublished - 4 May 2015
Externally publishedYes
EventCLEO: QELS - Fundamental Science, CLEO_QELS 2015 - San Jose, United States
Duration: 10 May 201515 May 2015

Publication series

NameCLEO: QELS - Fundamental Science, CLEO_QELS 2015


ConferenceCLEO: QELS - Fundamental Science, CLEO_QELS 2015
Country/TerritoryUnited States
CitySan Jose


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