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Cisco has introduced two research prototypes: a controller to schedule and monitor quantum-network connections, and a compiler that divides computing tasks among processors and requests network resources. Cisco reports a multi-vendor test over about 11 miles of commercial fiber in New York City, but the prototypes do not establish that large-scale quantum networks are commercially ready.
Cisco has introduced two research software prototypes intended to coordinate equipment in larger quantum networks and make network connections available to applications through software requests. The Quantum Network Controller schedules and monitors connections, while an updated Network-Aware Quantum Compiler divides computing tasks among processors and requests the network resources they require, according to Cisco.
The two prototypes address different operational tasks. Cisco says the controller manages hardware such as quantum sources, switches, detectors and timing systems. It is designed to establish connections, allocate them among applications, track their quality and respond when performance deteriorates. The compiler works at the application level: it determines how a program can be divided across processors and what network connections are needed to carry out that work.
Cisco reported that the software coordinated equipment from multiple vendors over about 11 miles of commercial fiber in New York City. The company said the test achieved greater than 99% polarization fidelity at room temperature. Fidelity measures how closely a delivered quantum state matches the intended state. The announcement does not provide further test details, such as the duration, connection rate, number of network nodes or the conditions used to calculate the result.
The proposed service model is called Entanglement-as-a-Service. An application would specify endpoints and requirements such as connection quality, rate and availability time; the network software would then arrange the underlying equipment and maintain the service. Cisco says the controller uses software interfaces and a hardware abstraction layer to translate common instructions into commands for specific devices. The company identifies Brooklyn-based Qunnect and Swabian Instruments among vendors whose equipment can work with the approach.
From Manual Links to Scheduled Service
Quantum devices do not automatically become a larger working system when they are connected by fiber. A network also needs to coordinate hardware, timing and competing requests, and to respond when a link fails or its quality drops. Cisco’s proposal matters because it targets that coordination layer: applications could request a network outcome without directly controlling each source, switch or detector.
That approach could reduce the burden of configuring and maintaining networks as the number of devices and users grows. Cisco’s blog post says existing networks have often been assembled one point-to-point connection at a time, with custom software suitable for systems with a small number of nodes. It illustrates the scaling challenge with a fully connected network of 1,000 nodes, which would require nearly 500,000 dedicated links if every pair had a separate connection. That figure describes the full-mesh approach; it is not a measurement of Cisco’s prototype.
Sharing network resources could be relevant to efforts to connect processors whose individual capacity is limited, as well as to communication and measurement applications. But the announcement describes a proposed operating model and early software prototypes, not evidence that users can now buy a large, reliable network of connected quantum computers. The distinction matters: a successful fiber test is a demonstration of coordination under particular conditions, not proof of broad commercial readiness.
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The Software Layer Above Quantum Links
Cisco’s announcement builds on its earlier work on shared quantum connectivity. Earlier in 2026, the company introduced its Universal Quantum Switch, a separate prototype intended to help different types of quantum systems share network connections. The newly announced controller is described as an operating layer above such switching hardware, deciding which connections to establish and when resources should be available.
Quantum-network monitoring also differs from checking ordinary data traffic. Cisco says measurements can disturb quantum states, limiting how operators inspect information while a connection is in use. Its controller instead monitors link quality statistically and can apply predefined responses, including tuning equipment, retrying an operation or reinitializing a device. If those steps do not work, the system calls for human intervention, according to the company’s account.
The controller is designed to keep checking a connection while an application uses it and to release hardware when the task ends. The larger aim is to move from individually configured links toward a shared network service. This remains a research effort: Cisco characterizes both the controller and compiler as prototypes, and the reported test is one demonstration of the approach.
“The current operating burden is like driving a car while manually controlling its individual mechanical parts.”
— Vijoy Pandey, senior vice president of Outshift by Cisco
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Prototype Results and Open Questions
Commercial availability and readiness are not established. Cisco calls the systems research prototypes, and the announcement does not say when or whether either will become a commercial product. It also does not show that a large network of quantum processors is operating as a production service.
The company’s reported New York test is described in broad terms. Cisco gives the fiber distance and polarization-fidelity result, but the announcement does not specify the number of nodes, sustained performance, connection rate, test duration, error rates or how results compare with a defined baseline. It is also unclear how well the software performs as more applications compete for network capacity, or how the system handles failures beyond its listed automatic responses.
The vendor compatibility described by Cisco indicates that equipment from multiple suppliers was involved, but the material does not set out the full range of supported devices or independent validation of the test. Further results would be needed to judge how the approach performs across different network layouts and operating conditions.
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Further Tests Will Determine Scale
The next evidence to watch for is whether Cisco publishes more details from the multi-vendor fiber test and demonstrates the prototypes across additional nodes, applications and operating conditions. Those results could clarify how the controller allocates connections under competing requests and how reliably its recovery procedures maintain service.
Cisco has not announced a product release date in the source material. For now, the controller and compiler remain research prototypes, and the reported test should be read as a demonstration of software coordination rather than a timetable for commercial quantum networking. Any assessment of their practical reach will depend on further performance information and evidence that the systems can operate reliably as networks grow.
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Key Questions
What did Cisco announce?
Cisco announced two research software prototypes: a Quantum Network Controller for coordinating and monitoring hardware connections, and an updated Network-Aware Quantum Compiler that divides computing tasks and requests network resources.
What did Cisco report about its test?
Cisco said its software coordinated equipment from multiple vendors over about 11 miles of commercial fiber in New York City, achieving greater than 99% polarization fidelity at room temperature. The announcement does not provide several details, including the number of nodes and test duration.
What does Entanglement-as-a-Service mean?
It is Cisco’s proposed model for letting an application request a quantum connection, including endpoints and requirements such as quality, rate and timing. The network software would arrange the hardware resources instead of requiring the application to configure each device.
Are the prototypes commercially available?
The source describes both systems as research prototypes and gives no commercial release date. The announcement does not establish that a large quantum network is ready for commercial use.
Source: rss
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