Long-distance coherent quantum communications in deployed telecom...

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2025-04-24 06:16:19 -

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Long-distance coherent quantum communications in deployed telecom networks

Nature, Published online: 23 April 2025; doi:10.1038/s41586-025-08801-wA twin-field quantum key distribution protocol based on optical coherence is deployed over a 254-kilometre commercial telecom network, demonstrating that coherence-based quantum communication can be aligned with existing telecommunication infrastructure.

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