Cisco's Outshift group has spent years assembling the networking pieces for quantum computing. At its Quantum Summit this month, the company unveiled the Quantum Network Controller, a research prototype meant to replace the manual, point-to-point stitching that dominates today's quantum links. Cisco argues that scaling quantum systems requires distributed, cloud-like architectures, and that human configuration will not keep up with machine-speed requests once applications demand entanglement between arbitrary nodes.
The controller acts as an abstraction layer, offering what Cisco calls Entanglement-as-a-Service. Applications request connections by specifying endpoints, fidelity, rate, and timing; the controller schedules the link, monitors its quality, and retries or reinitializes if performance falters. It is also designed to hide the complexity of onboarding different quantum modalities and vendors, since no single company will supply everything.
Alongside the controller, Cisco introduced its Network-Aware Quantum Compiler. The compiler takes a large quantum circuit, breaks it into smaller pieces, and works with the controller to distribute entanglements at the right time so partial computation moves between processors. Cisco notes that connecting 1,000 nodes point-to-point would need close to 500,000 dedicated links, underscoring the need for automated control rather than manual setup.