Weak-values technique for velocity measurements

Gerardo I. Viza*, Julián Martínez-Rincón, Gregory A. Howland, Hadas Frostig, Itay Shomroni, Barak Dayan, John C. Howell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

137 Scopus citations


In a recent Letter, Brunner and Simon proposed an interferometric scheme using imaginary weak values with a frequency-domain analysis to outperform standard interferometry in longitudinal phase shifts [Phys. Rev. Lett 105, 010405 (2010)]. Here we demonstrate an interferometric scheme combined with a time-domain analysis to measure longitudinal velocities. The technique employs the near-destructive interference of non-Fourier limited pulses, one Doppler shifted due to a moving mirror in a Michelson interferometer. We achieve a velocity measurement of 400 fm/s and show our estimator to be efficient by reaching its Cramér-Rao bound.

Original languageAmerican English
Pages (from-to)2949-2952
Number of pages4
JournalOptics Letters
Issue number16
StatePublished - 2013
Externally publishedYes


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