Quantum breakthrough secures data transmission in existing telecom networks
Researchers have successfully integrated Shortwave-QKD into existing telecommunications networks, ensuring secure quantum key distribution without disrupting current infrastructure. This breakthrough promises unparalleled security for data transmission.
The team, whose specific institution is not provided, demonstrated that Shortwave-QKD can function seamlessly in existing networks. Over installed fibre loops, they achieved a secure-key rate of 12 kb/s while maintaining 50 co-existing classical data channels. Experiments showed high stability and consistent performance, with speckle patterns causing variations in transmission loss, which were minimized through careful spectral tuning.
In data centers, the team showcased secure communication alongside standard data transmission, again achieving a secure-key rate of 12 kb/s with 50 co-existing classical data channels. They overcame challenges posed by few-mode propagation and speckle-selective loss, paving the way for practical, cost-effective quantum-secured networks compatible with current telecom applications.
Previously, quantum key distribution (QKD) was limited by dedicated fibre infrastructure. This breakthrough by the research team enables secure communication in existing networks, opening new avenues for secure data transmission in various industries.
