Realising high-dimensional quantum entanglement with orbital angular momentu
DOI:
https://doi.org/10.17159/sajs.2015/20130322Keywords:
quantum entanglement, orbital angular momentum, spatial light modulators, quantum communication, quantum opticsAbstract
We report the first quantum entanglement experiment in South Africa. The spatial modes of the entangled photon pair were investigated with their potential for high-dimensional entanglement. The generation, measurement and characterisation of the entangled states were examined in detail and we show high-dimensional entanglement in a Hilbert space of dimension 25. High-dimensional entanglement introduces the possibility for more secure communication and more efficient computations. We highlight the experimental challenges contained within each step and provide practical techniques for future experiments in the quantum regime.
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