Continuous Variable Entanglement and Squeezing of Orbital Angular Momentum States

Mikael Østergaard Lassen, Gerd Leuchs, Ulrik Lund Andersen

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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.
Original languageEnglish
JournalPhysical Review Letters
Volume102
Issue number16
Pages (from-to)163602
ISSN0031-9007
DOIs
Publication statusPublished - 2009

Bibliographical note

Copyright (2009) American Physical Society.

Keywords

  • SYSTEMS
  • LIGHT-BEAMS
  • POINCARE-SPHERE
  • CRITERION
  • IMAGES
  • MODES

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