6–10 Jul 2026
University of the Western Cape
Africa/Johannesburg timezone
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Revealing quantum entanglement signatures with OAM states

7 Jul 2026, 17:20
1h 20m
Great Hall (University of the Western Cape)

Great Hall

University of the Western Cape

Poster Presentation Track C - Photonics Poster Session 1

Speaker

Ms Pashlene Naidoo (University of Witswatersrand)

Description

Quantum entanglement remains the fundamental cornerstone of modern quantum
information protocols, including quantum cryptography, computing, and communication.
Despite this, there are very few quantum entanglement setups available in Africa. Here, we
show how to set up a quantum experiment and verify quantum entanglement to estimate the
properties of quantum states using quantum state tomography. We use a spiral bandwidth to
analyze the correlations between the pairs and perform bell’s inequality by calculating the
CHSH (Clauser-Horne-Shimony-Holt) parameter. A violation of the bell inequality
demonstrates the non-local nature of the generated entangled OAM states and effectively
ruling out local hidden-variable theories. We demonstrate how our approach can be
extended to quantum topological signatures.

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Author

Ms Pashlene Naidoo (University of Witswatersrand)

Co-author

ANDREW FORBES (U. Witwatersrand)

Presentation materials

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