research
A Quantum Dot Sends 14.2 Megabits of Secure Key Across Campus
Frequency-converted entangled photons sustained BBM92 key distribution over 1.59 kilometers of deployed fiber for 19 hours.
Summary
Frequency-converted entangled photons sustained BBM92 key distribution over 1.59 kilometers of deployed fiber for 19 hours.
A one-gigahertz quantum-dot source fed polarization-entangled photons through telecom conversion and a field-deployed Stuttgart campus link. The experiment reports 206 secure bits per second and 14.2 megabits total after error correction and privacy amplification. It is a campus demonstration, not a commercial network claim.
Why it matters
Frequency-converted entangled photons sustained BBM92 key distribution over 1.59 kilometers of deployed fiber for 19 hours.
Limits and context
- It is a campus demonstration, not a commercial network claim.
Key claims
Frequency-converted entangled photons sustained BBM92 key distribution over 1.59 kilometers of deployed fiber for 19 hours.
Qualification: It is a campus demonstration, not a commercial network claim.
Evidence: source-2026-10-29-018
Sources
- arXiv preprint 2610.37268, original v1arXiv · primary research
Corrections
No corrections have been recorded for this story.