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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 20 — Oct. 15, 2013
  • pp: 4108–4111

Walsh modes and radial quantum correlations of spatially entangled photons

D. Geelen and W. Löffler  »View Author Affiliations

Optics Letters, Vol. 38, Issue 20, pp. 4108-4111 (2013)

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Orthogonal sets of 2D transverse modes are key to controlling the spatial degree of freedom of light in a classical or quantum context. In contrast to the azimuthal part, which is easily accessible using orbital angular momentum modes, control of the radial part is more difficult. We show here that simple sets of orthogonal binary sequences, the Walsh functions, provide a workable solution for exploration of the radial space with phase-only spatial light modulation. We demonstrate this by measuring “sequency” quantum correlations between different radial Walsh modes of spatially entangled photon pairs and for numerically optimized versions thereof.

© 2013 Optical Society of America

OCIS Codes
(030.4070) Coherence and statistical optics : Modes
(270.0270) Quantum optics : Quantum optics

ToC Category:
Quantum Optics

Original Manuscript: August 1, 2013
Revised Manuscript: September 13, 2013
Manuscript Accepted: September 17, 2013
Published: October 9, 2013

D. Geelen and W. Löffler, "Walsh modes and radial quantum correlations of spatially entangled photons," Opt. Lett. 38, 4108-4111 (2013)

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