Measurement of Quantum Weak Values of Photon Polarization

G. J. Pryde, J. L. O’Brien, A. G. White, T. C. Ralph, and H. M. Wiseman
Phys. Rev. Lett. 94, 220405 – Published 9 June 2005; Erratum Phys. Rev. Lett. 94, 239904 (2005)
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Abstract

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.

  • Figure
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  • Received 27 December 2004
  • Corrected 13 June 2005

DOI:https://doi.org/10.1103/PhysRevLett.94.220405

©2005 American Physical Society

Corrections

13 June 2005

Erratum

Publisher’s Note: Measurement of Quantum Weak Values of Photon Polarization [Phys. Rev. Lett. 94, 220405 (2005)]

G. J. Pryde, J. L. O’Brien, A. G. White, T. C. Ralph, and H. M. Wiseman
Phys. Rev. Lett. 94, 239904 (2005)

Authors & Affiliations

G. J. Pryde1,*, J. L. O’Brien1,*, A. G. White1,*, T. C. Ralph1, and H. M. Wiseman2

  • 1Centre for Quantum Computer Technology, Physics Department, The University of Queensland, Brisbane, QLD, 4072, Australia
  • 2Centre for Quantum Computer Technology and Centre for Quantum Dynamics, Griffith University, Brisbane, QLD, 4111, Australia

  • *Electronic address: www.quantinfo.org

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Issue

Vol. 94, Iss. 22 — 10 June 2005

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