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Breakthrough Method Extends Quantum Network Range to 2,000 km

11/28/2025

Summary

Story summary

University of Chicago researchers report a method that extends quantum-network range to 2,000 kilometers, published November 6, 2025, in Nature Communications.
The approach increases the coherence time of erbium atoms, a key factor for quantum communication.
The technique uses molecular-beam epitaxy to construct rare-earth-doped crystals and enhance their quantum properties.
The team plans to test long-distance connections in their lab before real-world deployment.

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Story summary

University of Chicago researchers report a method that extends quantum-network range to 2,000 kilometers, published November 6, 2025, in Nature Communications.
The approach increases the coherence time of erbium atoms, a key factor for quantum communication.
The technique uses molecular-beam epitaxy to construct rare-earth-doped crystals and enhance their quantum properties.
The team plans to test long-distance connections in their lab before real-world deployment.