Giovannini, D. and Miatto, F. M. and Romero, J. and Barnett, S. M. and Woerdman, J. P. and Padgett, M. J. (2012) Determining the dimensionality of bipartite orbital-angular-momentum entanglement using multi-sector phase masks. New Journal of Physics, 14 (7). ISSN 1367-2630
The Shannon dimensionality of orbital-angular-momentum (OAM) entanglement produced in spontaneous parametric down-conversion can be probed by using multi-sector phase analysers . We demonstrate a spatial light modulator-based implementation of these analysers, and use it to measure a Schmidt number of about 50.
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