Explainer
What Is Quantum Advantage?
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…
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Explainer
Evergreen physics: the concepts the other two rely on.
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Explainer
Is the Muon g-2 Anomaly Still an Anomaly?
For twenty years, the muon's magnetism was the most promising crack in the Standard Model: it came out slightly larger than theory predicted, and the gap refused to go away.…
Explainer
What Is Quantum Entanglement?
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…
Explainer
Quantum Decoherence: Why the Quantum World Looks Classical
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…
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How We Know Neutrinos Have Mass
A hundred trillion neutrinos pass through your body every second and never touch you, and for most of the twentieth century physicists were sure they weighed nothing at all. They…
Explainer
Quantum Error Correction Explained: Surface Codes and Magic States
Quantum error correction diagnoses damage without reading the information it protects. Surface-code memories show how added qubits can improve reliability; magic state cultivation addresses a different bottleneck, preparing the resources…
Explainer
What Is a Qubit?
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…
Explainer
Why Nobody Has Ever Seen a Free Quark
Take a proton and try to pull one of its quarks out. The force resisting you does not weaken with distance the way gravity or electricity does. It stays roughly…
Explainer
Logical Qubits Explained: Why Physical and Logical Qubit Counts Don’t Compare
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…
Explainer
What Is the Standard Model? Particles, Forces and Limits
The Standard Model describes electromagnetic, weak and strong interactions through a shared quantum-field framework. Its familiar chart groups particles into 17 labels, while 19 measured parameters define the conventional minimal…
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