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Governments committed $12.7 billion to quantum technology in 2025 and venture investors $4.9 billion, against a $1.9 billion market. Spin-offs combine both kinds of money. Companies that listed in 2026 have yet to show a shorter path to profit.
Are the qubits physical or logical? Is there a paper, and who checked it? A reader can judge a quantum computing announcement with seven questions, each shown here with a 2026 case and the document that answers it.
Quantinuum has reported logical-qubit counts of 94, 50, 48, and one on the same machine with 98 physical qubits, from four different experiments. With five questions, a reader can tell what most such announcements demonstrated.
The code Infleqtion used is guaranteed to flag any single error but not to correct one, apart from the loss of an atom. A full paper with methods, resource counts, and statistics is still to come.
Rydberg-atom receivers sense radio waves with laser-probed atoms in a centimeter-scale glass cell and tune from about 100 kilohertz to terahertz frequencies. In published comparisons, conventional receivers still detect weaker signals in most bands.
Microwave atomic clocks keep GPS time, and Exail says more than 20 of its cold-atom gravimeters are deployed. Quantum navigation units, wearable brain scanners, and atom-based radio receivers are still being tested against the classical instruments they would replace.
One block of Infleqtion's code stores 18 logical qubits in 98 physical data qubits. Infleqtion's Victory Omole wrote that those numbers are "not a hardware resource estimate." The company has not run the code on hardware.
Michael Kratsios cited a 2028 Energy Department goal and NIST's plan to finish its own post-quantum transition by the end of 2027. Most of the agency programs he cited had been announced in the seven weeks before the summit.
