Ciena and Quantum Computing Inc. (QCi) are demonstrating a next-generation secure communications platform that combines quantum key distribution (QKD) with post-quantum cryptography (PQC) across high-speed optical networks. The joint demonstration at OFC 2026 integrates quantum security technologies with Ciena’s optical networking infrastructure to enable quantum-safe encryption across fiber transport systems.
The demonstration showcases how QKD and PQC can work together within existing optical network infrastructure to protect data transmissions against future quantum computing threats. The system uses quantum-generated keys distributed across optical fiber links combined with high-speed encryption technologies to secure communications for applications such as financial networks, government infrastructure, and hyperscale cloud environments.
Ciena said the integration demonstrates how quantum-safe networking technologies can operate alongside high-capacity optical transport systems without disrupting performance. As governments and critical infrastructure operators begin planning for the quantum era, vendors are exploring hybrid security architectures that combine multiple layers of cryptographic protection.
Key Points
• Joint Ciena and Quantum Computing Inc. demonstration at OFC
• Combines quantum key distribution with post-quantum cryptography
• Designed for high-speed optical transport networks
• Targets government, financial, and hyperscale infrastructure
• Demonstrates integration of quantum security into existing networks
“This demonstration illustrates how quantum-secure technologies can be integrated with modern optical networking infrastructure,” the companies said in the announcement. “By combining quantum key distribution with post-quantum cryptography and high-speed encryption, we can help ensure that critical communications networks remain secure in the era of quantum computing.”
🌐 Analysis
Quantum-safe networking is becoming an increasingly important topic for optical infrastructure vendors as the long-term impact of quantum computing on cryptographic security becomes clearer.
Quantum key distribution allows encryption keys to be generated and exchanged using quantum physics principles that can detect eavesdropping attempts. Post-quantum cryptography, meanwhile, focuses on mathematical encryption methods designed to remain secure even against large-scale quantum computers.
Ciena has been active in the development of secure optical networking technologies, while Quantum Computing Inc. develops quantum photonics and quantum cybersecurity solutions. The collaboration highlights how quantum security technologies are beginning to converge with high-capacity optical transport infrastructure.
