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Related Experiment Video

Updated: Nov 14, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Creation and control of high-dimensional multi-partite classically entangled light.

Yijie Shen^1,2,3, Isaac Nape⁴, Xilin Yang⁵

¹School of Physics, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa. Y.Shen@soton.ac.uk.

Light, Science & Applications

|March 9, 2021

Summary

Researchers created and controlled eight-dimensional vector beams, a new state-of-the-art. This breakthrough enables control over classical Greenberger-Horne-Zeilinger (GHZ) states in structured light for advanced applications.

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Area of Science:

Optics and Photonics
Quantum Information Science

Background:

Vector beams, with non-separable spatial mode and polarization, are crucial for applications like communication and imaging.
Current control is limited to two-dimensional states, hindering further advancements.

Purpose of the Study:

To demonstrate the first vectorially structured light controlled in eight dimensions.
To externally modulate beams for complete control of classical Greenberger-Horne-Zeilinger (GHZ) states.

Main Methods:

Development of a novel laser design for vectorial beam generation.
External modulation techniques to control beam properties.
Introduction of a new tomography method for fidelity verification.

Main Results:

Successfully created and controlled vector beams in eight dimensions, a significant advancement.
Demonstrated complete control over classical GHZ states in paraxial structured light.
Verified the fidelity of the generated states using the new tomography method.

Conclusions:

The eight-dimensional vector beams represent a new state-of-the-art in structured light.
The developed framework opens new pathways for vectorially structured light in classical and quantum regimes.
Potential for extending dimensionality and degrees of freedom for future research.