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Less Fuss, More Muscle in Quantum Data Transfer

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experimental array

The experiment array from the ARC Center of Excellence for Quantum-Atom Optics at ANU.

Credit: ANU

Australian National University (ANU) researchers have discovered a more efficient way to use light to convey information. The approach to generating quantum entanglement, or coding information in the physical relationship between two objects, uses fewer light beams and components.

"Until now, the amount of information that could be conveyed using optical entanglement was limited by levels of complexity," says lead researcher Jiri Janousek from ANU's ARC Center of Excellence for Quantum-Atom Optics. "The ability to scale up information transfer is hampered by the fact that you need to increase the number of nonclassical light sources, splitters, and receivers each time you want to add another channel of information." The researchers' findings on mode manipulation in light indicates only one light source and one receiver is needed for optical entanglement, which suggests that it would be easier to scale up for conveying more information channels.

Janousek sees the approach playing a role in the development of quantum technologies such as quantum communication and information processing, and even quantum computers.

From ANU News
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