Topic
In 1937 Ettore Majorana predicted a particle that is its own antiparticle, then vanished at sea the following year. Nobody has ever found his particle loose in nature. But condensed-matter…
John Bell worked on accelerator design at CERN. Quantum foundations was the hobby, and in 1964 it produced four pages in a journal that folded soon afterwards. The strange thing…
Google claimed quantum advantage in 2019, and within a few years classical computers had closed most of the gap. IBM claimed a version of it in 2023, and ordinary computers…
Erwin Schrodinger coined the word in 1935 to name the one thing quantum mechanics did that classical physics could not. Ninety years later, entanglement is no longer a paradox to…
Nothing in quantum mechanics forbids a cat from being alive and dead at once. Superposition has no size limit written into the theory, and yet nobody has ever seen a…
You cannot copy a qubit to protect it, and you cannot look at it to check on it, since both acts destroy the information you are trying to save. Quantum…
A qubit is not a bit that is somehow both 0 and 1 at once. That line points at the wrong mechanism. A qubit's state is a pair of complex…
Quantinuum reports 48 logical qubits built from 98 physical ones. Google's Willow result used 101 physical qubits to make one. IBM reports 70. All three numbers are correct. All three…
In 2019 the reference estimate for breaking RSA-2048 was 20 million noisy qubits running for eight hours. In March 2026 a Caltech and Oratomic team put the figure at 10,000.…
Between early 2025 and mid-2026, quantum processors have gone from simulating toy models of particle physics to watching confinement, string breaking, and hadron scattering play out in real time. These…
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