Interferometric Methods to Measure Orbital and Spin, or the Total Angular Momentum of a Single Photon

Jonathan Leach, Johannes Courtial, Kenneth Skeldon, Stephen M. Barnett, Sonja Franke-Arnold, and Miles J. Padgett
Phys. Rev. Lett. 92, 013601 – Published 5 January 2004

Abstract

We propose interferometric methods capable of measuring either the total angular momentum, or simultaneously measuring the spin and orbital angular momentum of single photons. This development enables the measurement of any angular momentum eigenstate of a single photon. The work allows the investigation of single-photon two-qubit entangled states and has implications for high density information transfer.

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  • Received 8 July 2003

DOI:https://doi.org/10.1103/PhysRevLett.92.013601

©2004 American Physical Society

Authors & Affiliations

Jonathan Leach1, Johannes Courtial1, Kenneth Skeldon1, Stephen M. Barnett2, Sonja Franke-Arnold2, and Miles J. Padgett1,*

  • 1Department of Physics and Astronomy, University of Glasgow, Glasgow, Scotland
  • 2Department of Physics, University of Strathclyde, Glasgow, Scotland

  • *Electronic address: m.padgett@physics.gla.ac.uk

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Vol. 92, Iss. 1 — 9 January 2004

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