The Quantum Internet in 2026: What Exists, What Is Missing
What people mean by "quantum internet"
A quantum internet would send qubits and entanglement between quantum devices, alongside the normal internet, which would still carry ordinary data and coordination messages. Likely uses include secure key exchange, linking quantum computers, and connecting quantum sensors for better measurements. For the overview, read the quantum internet and quantum networks. This page is a progress scorecard.
The scorecard
| Piece | Status (reported) | Deep dive |
|---|---|---|
| City scale links | Two diamond spin processors linked over 25 km of deployed fiber (QuTech, 2024) | metropolitan networks |
| Memory building blocks | Memory to memory entanglement over about 10 km fiber in a 2026 paper accepted for Nature | repeaters and memory |
| Satellite links | Micius (2016), Jinan-1 relay QKD in Nature, March 2025; Europe's Eagle-1 not confirmed launched | satellite QKD |
| Networked computers | Two trapped ion modules ran a teleported gate and Grover search (Oxford) | distributed computing |
| Certified randomness | NIST and CU Boulder CURBy beacon, 2025 | QRNGs |
| Network software | Cisco research prototypes for compiling and scheduling, 2025 | distributed computing |
What is still missing
- A multi node repeater chain over real fiber. Segments work; I found no report of a finished chain beating direct transmission.
- Fast, high fidelity entanglement. Rates are low and links are fragile.
- Routing and standards. Today's links are point to point. A network needs addressing, scheduling and error handling.
- Untrusted long distance links. Satellite and fiber QKD networks still lean on trusted relays.
- Killer apps. The most convincing uses are secure keys, distributed computing and sensing, and each is early.
Who is building it
Government backed programs include the EU's EuroQCI, begun in 2019, which plans fiber and satellite segments and a link to the future IRIS2 constellation. China's work covers satellites and ground links (see China's plan). The US has executive orders and a pending reauthorization (see US orders and the NQI reauthorization). Companies range from telecom and networking firms to quantum computer makers (see the company map).
The security question
People sometimes assume a quantum internet is needed to survive quantum computers. It is not. The NSA, as reported, does not recommend QKD for National Security Systems and CNSA 2.0 has no QKD option, and the UK NCSC says the same about government use. Both point to post-quantum cryptography as the main defense. The NSA reportedly sees stronger uses for quantum cryptography in a broader fully quantum network linking computers and sensors, which it calls theoretical. See QKD vs PQC for the full comparison, and the deadlines if you run systems.
How to follow progress without hype
- Look for distance in kilometers of deployed fiber, and whether it was one link or a chain.
- Check whether a trusted relay was used.
- Look for rates and fidelity numbers. If they are missing, the result is probably early.
- Prefer papers and agency pages over headlines. More tips are in how to follow quantum news.
Why timelines are hard to give
Quantum networking depends on several things improving together: memories that last longer, interfaces that waste fewer photons, fiber that stays stable, and software that can schedule scarce entanglement. A gain in one place does not help much if another lags. That is why careful researchers talk about milestones rather than dates, and why project goals such as a 50 km urban demonstration or a three node memory test should be read as plans until a paper appears. Progress also tends to arrive in uneven bursts, with a surprising result followed by quiet years of engineering.
The outlook
Look at the arc: from a 2016 satellite to a 2025 microsatellite, from lab tables to a 25 km city link, from single qubits in one box to teleported gates across two modules. Each step is a real, checkable result. A full quantum internet will take years of engineering, and no one can promise a date, but the foundations are being poured now. That is a good reason for curiosity, and a reason to stay skeptical about anyone selling certainty. Nothing here is financial advice, and the independent QNT community token has no link to any company, lab or government mentioned.
Sources and further reading
- QuTech: Delft to The Hague link
- arXiv 2602.08472: quantum repeater building block
- Chinese Academy of Sciences: Jinan-1
- ESA: EuroQCI and Eagle-1
- PostQuantum.com: NSA QKD guidance
- UK NCSC: QKD white paper
Reported as of 2026-10-09. Quantum networking results are mostly lab or pilot demonstrations, and schedules slip. Check the primary papers and agency pages before relying on any figure. Nothing here is financial advice. QNT is an independent community memecoin and is not linked to Quantinuum Ltd or any lab, company or government.
Frequently asked questions
Does a quantum internet exist today?
Not as a network. There are two node links, satellite pilots and lab building blocks.
Do I need a quantum internet to be safe from quantum computers?
No. Agencies such as the NSA and UK NCSC point to post-quantum cryptography, which runs on existing networks.
What is the biggest missing piece?
A working multi node repeater chain with long lived memories, plus routing and standards.
Is this investment advice?
No. It is education only, and QNT is independent of any lab, company or government.
Keep reading
- The Quantum Internet and Quantum Networks Explained
What is a quantum internet? Learn how quantum networks send entangled qubits, what quantum repeaters do, and how this differs from today's internet. - QKD vs Post-Quantum Cryptography: Why Agencies Prefer Math
Two ways to defend against future quantum computers, one built on physics and one on new math, and why the NSA and the UK NCSC back the math. - Quantum Repeaters and Quantum Memory Explained
Why quantum signals cannot simply be amplified, how repeaters get around it with entanglement swapping, and why memories are the missing piece. - How to Follow Quantum News Without Getting Fooled by Hype
The best primary sources, trade outlets and habits for tracking quantum computing news, plus red flags for exaggerated claims.
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