Measurement of quantum weak values of photon polarization

G.J. Pryde, JL O'Brien, A.G. White, T.C. Ralph, H.M. Wiseman

Research output: Contribution to journalArticle (Academic Journal)peer-review

235 Citations (Scopus)


We experimentally determine weak values for a single photon's polarization, obtained via a weak measurement that employs a two-photon entangling operation, and postselection. The weak values cannot be explained by a semiclassical wave theory, due to the two-photon entanglement. We observe the variation in the size of the weak value with measurement strength, obtaining an average measurement of the S1 Stokes parameter more than an order of magnitude outside of the operator's spectrum for the smallest measurement strengths. © 2005 The American Physical Society.
Translated title of the contributionMeasurement of quantum weak values of photon polarization
Original languageEnglish
Pages (from-to)170 - 179
Number of pages1
JournalPhysical Review Letters
Volume94 (4-6)
Publication statusPublished - Dec 2005

Bibliographical note

Publisher: Elsevier B.V

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