Story perspectives

World's Longest Quantum Link Paves Way for Secure Internet

9/2/2025

Summary

Story summary

Researchers established a 12,900-kilometer quantum communication link between Beijing and Stellenbosch University, the longest to date.
Quantum key distribution was used to securely transmit encrypted images with 1.07 million bits of undisturbed photons.
The Jinan-1 microsatellite and a portable optical ground station enabled this communication breakthrough.
New methods improve secure information transmission, confirming a quantum channel for distillable entanglement.
These advancements contribute to the development of a global quantum internet, enhancing security against future hacking threats.

History

Historical Context

The European Union's Quantum Communication Initiative, launched in 2004, aimed to advance secure data transmission through quantum key distribution (QKD). This initiative has led to significant milestones, including a record 12,900-kilometer link established between Beijing and Stellenbosch University. As nations invest in quantum networks, the implications for cybersecurity and international relations are profound, potentially reshaping digital security.

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Story summary

Researchers established a 12,900-kilometer quantum communication link between Beijing and Stellenbosch University, the longest to date.
Quantum key distribution was used to securely transmit encrypted images with 1.07 million bits of undisturbed photons.
The Jinan-1 microsatellite and a portable optical ground station enabled this communication breakthrough.
New methods improve secure information transmission, confirming a quantum channel for distillable entanglement.
These advancements contribute to the development of a global quantum internet, enhancing security against future hacking threats.

1 / 2