Measurement of quantum weak values of photon polarization

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

Research output: Contribution to journalArticlepeer-review

269 Citations (Scopus)
1 Downloads (Pure)


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.

Original languageEnglish
Article number220405
JournalPhysical Review Letters
Issue number22
Publication statusPublished - 10 Jun 2005
Externally publishedYes


Dive into the research topics of 'Measurement of quantum weak values of photon polarization'. Together they form a unique fingerprint.

Cite this