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Device-independent quantum key distribution over 100 km with single atoms

Bo-Wei Lu1,2,3, Chao-Wei Yang1,2,3, Run-Qi Wang1,2,3

  • 1Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei, China.

Science (New York, N.Y.)
|February 5, 2026
PubMed
Summary

Researchers achieved device-independent quantum key distribution (DI-QKD) over 100 km fiber using single-atom nodes. This breakthrough demonstrates high-fidelity entanglement and secure key rates, paving the way for practical quantum internet applications.

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