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Quantum Signals Transmitted via Fiber, Paving Path for Quantum Internet

9/23/2025

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Summary

Story summary

Researchers at the University of Pennsylvania transmitted quantum signals over commercial fiber using Internet Protocol (IP).
The custom-built Q-Chip pairs quantum signals with classical headers, letting routers handle data without disturbing quantum states.
This integration advances toward a quantum internet by letting quantum signals ride existing internet infrastructure.
A 1-kilometer fiber link achieved over 97% transmission fidelity despite environmental noise.

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Story summary

Researchers at the University of Pennsylvania transmitted quantum signals over commercial fiber using Internet Protocol (IP).
The custom-built Q-Chip pairs quantum signals with classical headers, letting routers handle data without disturbing quantum states.
This integration advances toward a quantum internet by letting quantum signals ride existing internet infrastructure.
A 1-kilometer fiber link achieved over 97% transmission fidelity despite environmental noise.