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Quantum Networks: What Researchers Are Building
Quantum networking research includes entanglement and repeaters. Our earlier speed and distance record lacked a source.
By Leo Ortega
Correction, October 18, 2026: Our earlier story claimed a 10Gbps quantum link across 5,000 kilometers and called the resulting network unhackable. We supplied no research paper or test details and have withdrawn those claims.
The Department of Energy's quantum networks explainer describes the work needed to connect quantum systems. Quantum repeaters that use entanglement are among the research priorities for a quantum internet.
Ask what a demonstration measured
When reading about a network experiment, check the paper's definition of its rate, the distance covered, and the equipment involved. Those details are needed before comparing one result with another.
Our previous article did not provide that information. The DOE overview is a starting point for understanding the field; it does not substantiate the record or security guarantee in our original report.