  We report the first quantum entanglement experiment in South Africa. The
spatial modes of the entangled photon pair are investigated with their
potential for high-dimensional entanglement. The generation, measurement and
characterisation of the entangled states are examined in detail, where we show
high-dimensional entanglement in a Hilbert space of dimension 25. We highlight
the experimental challenges contained within each step and provide practical
techniques for future experiments in the quantum regime.
