Realising high-dimensional quantum entanglement with orbital angular momentum

TL;DR

This paper demonstrates high-dimensional quantum entanglement using orbital angular momentum in a novel experiment conducted in South Africa, highlighting practical techniques and challenges in generating and measuring 25-dimensional entangled states.

Contribution

First experimental realization of high-dimensional quantum entanglement in South Africa using orbital angular momentum, with detailed techniques and analysis.

Findings

Achieved 25-dimensional entanglement in spatial modes.

Identified key experimental challenges and solutions.

Demonstrated potential for high-capacity quantum information processing.

Abstract

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.