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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 6431–6438

Mode counting in high-dimensional orbital angular momentum entanglement

M.P. van Exter, P.S.K. Lee, S. Doesburg, and J.P. Woerdman  »View Author Affiliations

Optics Express, Vol. 15, Issue 10, pp. 6431-6438 (2007)

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We study the high-dimensional orbital angular momentum (OAM) entanglement contained in the spatial profiles of two quantum-correlated photons. For this purpose, we use a multi-mode two-photon interferometer with an image rotator in one of the interferometer arms. By measuring the two-photon visibility as a function of the image rotation angle we measure the azimuthal Schmidt number, i.e., we count the number of OAM modes involved in the entanglement; in our setup this number is tunable from 1 to 8.

© 2007 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(270.0270) Quantum optics : Quantum optics
(270.4180) Quantum optics : Multiphoton processes

ToC Category:
Quantum Optics

Original Manuscript: March 5, 2007
Revised Manuscript: April 13, 2007
Manuscript Accepted: April 14, 2007
Published: May 11, 2007

M. P. van Exter, P. S. K. Lee, S. Doesburg, and J. P. Woerdman, "Mode counting in high-dimensional orbital angular momentum entanglement," Opt. Express 15, 6431-6438 (2007)

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