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Experimental demonstration of fractional orbital angular momentum entanglement of two photons

S. S. R. Oemrawsingh·X. Ma·D. Voigt·A. Aiello·E. R. Eliel·G. W. 't Hooft·J. P. Woerdman
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Abstract

The singular nature of a non-integer spiral phase plate allows easy manipulation of spatial degrees of freedom of photon states. Using two such devices, we have observed very high dimensional (D > 3700) spatial entanglement of twin photons generated by spontaneous parametric down-conversion.

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S. S. R. Oemrawsingh, X. Ma, D. Voigt, A. Aiello, E. R. Eliel, G. W. 't Hooft, J. P. Woerdman. 2005-06-29. Experimental demonstration of fractional orbital angular momentum entanglement of two photons. https://doi.org/10.1103/physrevlett.95.240501

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