Toshiba, Ciena and Quantum Corridor Just Sent 1.6 Terabits Per Second Through a Quantum-Secured Pipe

août 15, 2026 admin

By OFOKI TECH | August 15, 2026

On August 4, 2026, a fiber optic cable running between Chicago and Hammond, Indiana, carried something no commercial network had carried before: 1.6 terabits per second of data, encrypted with algorithms designed to survive the arrival of quantum computers. The trial was a collaboration between Quantum Corridor, a Midwestern network operator; Ciena, the optical networking giant; and Toshiba, which supplied the quantum key distribution hardware. It lasted 48 hours. It worked on live production infrastructure. And it suggests that the transition to quantum-safe networking may be closer than most enterprises think.

The Setup: Two Layers of Encryption

The trial used a hybrid approach that combined two distinct technologies. The first layer was post-quantum cryptography, or PQC: mathematical algorithms approved by NIST that are designed to resist attacks from quantum computers. The second layer was quantum key distribution, or QKD: a physical method of generating encryption keys using the quantum properties of light, which Toshiba has been developing since 1999.

Ciena’s WaveLogic 6 Extreme platform handled the optical transport. The system delivered wire-speed AES-256-GCM encryption at 1.6 Tb/s, with NIST-certified PQC algorithms enabled out of the box. Toshiba’s QKD servers supplied quantum-generated keys to Ciena’s encryption systems during the trial. The result was a dual-layer security model: even if one layer were compromised, the other would remain intact.

The trial ran alongside existing WaveLogic 5 Extreme 800G encrypted traffic on the same photonic line system, demonstrating that higher-capacity quantum-safe services can coexist with deployed infrastructure without requiring a hardware overhaul.

Why This Matters Now

The urgency behind quantum-safe networking comes from a specific threat model known as harvest now, decrypt later. The premise is simple: adversaries can capture encrypted data today, store it, and wait for quantum computers powerful enough to break current encryption standards. By the time those computers exist, the data may still be valuable. Financial records, intellectual property, classified government communications, and healthcare data all have long shelf lives.

Governments have taken notice. The White House issued an executive order in June 2026 establishing federal policy for accelerating the transition to NIST-approved post-quantum cryptography standards. The EU and UK have issued similar mandates. For critical infrastructure operators, the question is no longer whether to prepare for quantum threats, but how quickly they can do so without disrupting existing operations.

The Network

Quantum Corridor’s fiber network spans 263 miles across the Midwest, connecting data centers, research institutions, and defense contractors. It is part of the Bloch Tech Hub, one of 31 U.S. Regional Innovation and Technology Hubs designated for quantum technologies. The network has been carrying customer traffic between its nodes for some time, with encrypted channels secured via co-propagating QKD systems.

Ryan Lafler, President and CTO of Quantum Corridor, stated in the official announcement that quantum-safe networking is no longer a future discussion. The trial, he said, demonstrates how customers can transition to quantum-secure solutions while continuing to support the bandwidth demands of AI, cloud, and mission-critical applications.

The Upgrade Path

One of the most practical aspects of the trial is the upgrade path it validates. Ciena noted that customers already deploying WaveLogic 5 Extreme 800G encryption can add support for post-quantum cryptography through a software upgrade. This extends the value of current investments and removes a common barrier to adoption: the fear of stranded assets.

Toshiba’s contribution is the physical security layer. QKD generates keys by transmitting photons through optical fiber. Any attempt to intercept the photons disturbs their quantum state, revealing the eavesdropping attempt. This property is rooted in physics, not mathematics, which means it does not depend on computational assumptions that quantum computers could break.

Terry Cronin, Vice President of Toshiba Corporation, described the approach as layered: QKD complements post-quantum cryptography by adding a physical layer of security that strengthens the protection of critical communications.

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