Long-distance coherent quantum communications in deployed telecom networks

Record-Breaking Quantum Encryption Sent Through A 254-Kilometer-Long Real Telecom Network

Quantum internet is out of the lab and onto the streets!

Long-distance coherent quantum communications in deployed telecom networks

Recent advances in quantum communications have underscored the crucial role of optical coherence in developing quantum networks. This resource, which is fundamental to the phase-based architecture of the quantum internet1, has enabled the only successful demonstrations of multi-node quantum networks2–4 and substantially extended the range of quantum key distribution (QKD)5. However, the scalability of coherence-based quantum protocols remains un…

Quantum Communication Achieves Long-Distance Telecom Integration

In the rapidly evolving domain of quantum communications, the ability to maintain optical coherence over long distances has emerged as a vital ingredient for constructing the quantum internet of the future. Recent groundbreaking work by Pittaluga and colleagues marks a significant leap forward in this area, demonstrating coherent quantum communication over an unprecedented 254-kilometer span of deployed commercial fiber optic infrastructure conn…