Continuous Variable Entanglement and Squeezing of Orbital Angular Momentum States

M. Lassen, G. Leuchs, and U. L. Andersen
Phys. Rev. Lett. 102, 163602 – Published 23 April 2009

Abstract

We report the first experimental characterization of the first-order continuous variable orbital angular momentum states. Using a spatially nondegenerate optical parametric oscillator (OPO) we produce quadrature entanglement between the two first-order Laguerre-Gauss modes. The family of orbital angular momentum modes is mapped on an orbital Poincaré sphere, where the mode’s position on the sphere is spanned by the three orbital parameters. Using a nondegenerate OPO we produce squeezing of these parameters, and as an illustration, we reconstruct the “cigar-shaped” uncertainty volume on the orbital Poincaré sphere.

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  • Received 19 January 2009

DOI:https://doi.org/10.1103/PhysRevLett.102.163602

©2009 American Physical Society

Authors & Affiliations

M. Lassen1,2, G. Leuchs2,3, and U. L. Andersen1

  • 1Department of Physics, Technical University of Denmark, Fysikvej, 2800 Kongens Lyngby, Denmark
  • 2Max Planck Institute for the Science of Light, Günther Scharowskystrasse 1, 91058 Erlangen, Germany
  • 3University Erlangen-Nürnberg, Staudtstrasse 7/B2, 91058 Erlangen, Germany

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Vol. 102, Iss. 16 — 24 April 2009

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