Quantum Networking Roadmap Finds Only Two Apps Work Today
A new industry roadmap carries a blunt message. Most of what quantum networks are supposed to do doesn’t work yet. The Quantum Economic Development Consortium, working with the NSF Center for Quantum Networks, assessed 10 quantum networking applications and found today’s systems can support just two of them, and only over short, point-to-point links.
Which quantum networking applications work today
According to the July 29 press release, the report, called QNAR 2.0, sorts its 10 applications across secure communications, networked quantum computing, and distributed sensing. Specifically, the list runs from quantum key distribution and distributed quantum sensing to more ambitious ideas like blind quantum computing, where a user runs a calculation on a remote quantum machine without revealing the data, and clustered or distributed computing that ties multiple processors together. Of those ten, current hardware reaches only quantum key distribution and distributed sensing, and even those work solely in short-range, point-to-point setups rather than the multi-user networks the field is aiming for.
That’s a useful corrective to the quantum-internet hype, and the consortium doesn’t dress it up. As Celia Merzbacher, executive director of QED-C, said:
“Quantum networking is still in its early stages of development, but it has the potential to extend the value of quantum computing, sensing, and security,” said
What quantum networking still needs
The value of the document is in naming the gaps. For most of the ten applications, the roadmap says progress depends on quantum repeaters, optical network switches, satellite infrastructure, and better quantum light sources and light-matter interfaces. On the performance side, the holdups are qubit transmission rate and distance, fidelity, and synchronization. The idea is to show funders, policymakers, and researchers which parts of the networking stack would repay targeted investment.
Read it as a prioritization exercise, not a technical advance. The findings are expert consensus about what’s necessary, built jointly with the Center for Quantum Networks and drawing on contributors from L3Harris, IonQ, Argonne and Fermilab, Aliro Quantum, and other groups across industry and government, rather than new measurements or hardware. The gaps it flags are the same ones the field is already chasing, from startups building quantum repeaters for a future quantum internet to the trusted-node problem that still limits QKD at national scale. Network buildouts like Europe’s coordinated quantum-communication plans and lab work on sending entanglement through busy fiber are exactly the kind of progress the roadmap is trying to steer, part of the case QED-C keeps making to policymakers.