The field
The state of quantum computing, with receipts
Same rule as the research wing: nothing is asserted that a reader can't open. Every card carries a status, a published result is not a vendor announcement is not a roadmap is not an opinion, and the date of the underlying document. Last checked 2026-08-21.
- Verified, published result
- Vendor reported result
- Projection, roadmap target
- Opinion, named, dated
- Estimate, with caveats
- Contested, disputed in the record
- Preprint, not yet peer reviewed
Where the hardware actually is
- ✓ achievedBelow threshold error correction, Google Willow (Nature, 2025); Harvard/QuEra 448-atom architecture (Nature, 2026).
- ✓ achievedLogical qubits beating physical qubits, Microsoft/Quantinuum 800× (2024); Willow memory 2.4× beyond break even (2025); Helios (2025).
- ✗ not yetA fault tolerant machine solving useful problems, Not achieved as of 2026-08-21. Every vendor target above is dated 2027 or later.
Hardware scoreboard
Logical qubits, fidelities, code distance, results vs roadmaps, 2023-2026.
Post quantum cryptography
NIST's standards and deadlines, Mosca's inequality, the falling cost of breaking RSA-2048, and what isn't at risk.
What gets solved first
Chemistry and materials by expert consensus; optimization and ML with caveats; and the problems that aren't quantum.
The timeline debate
Named people, dated quotes, both directions, weighted the way the evidence is.
Careers
A ~16,500-person specialist market: roles, employers, degrees, and thin salary data, mapped to what this site already proves.
Quantum networking
From a 1,203 km satellite link to entanglement on live Berlin telecom fiber, and the repeater ingredients still being built.
Quantum sensing
Clocks at 8 × 10⁻¹⁹ and two minute coherence: the quantum technology that ships today.
National strategies
US reauthorization in progress, the UK's £2bn, the EU Quantum Act, and DARPA's referee program.
Open source tooling
Qiskit 2.0, OpenQASM 3.1, CUDA-Q, Stim, what an engineer actually installs, with licenses and dates.
The algorithm ledger
Shor, Grover and its optimality bound, HHL with the fine print, dequantization, VQE and QAOA, what is proven, three of them running on this site.
Open problems
BQP vs NP, quantum PCP, dequantization, the threshold theorem's assumptions, NISQ advantage, what remains unproven.