What Is Superposition? Amplitudes, Phase and the Bloch Sphere
Superposition means a qubit's state is described by two amplitudes. Their squares give the odds of reading 0 or 1, and what a Hadamard…
How to Read a Logical Qubit Claim
Vendors report logical qubit counts that are not comparable to each other. The mechanism underneath the number, and the five properties that make two…
How to Read a Quantum Benchmark
Vendor benchmark numbers are usually accurate and rarely comparable. A field guide to what quantum volume, algorithmic qubits, XEB and CLOPS measure, and what…
Quantum Machine Learning Explained for Developers
What quantum machine learning is, the four model families you will meet, how classical data gets into a quantum computer, and what has actually…
The DiVincenzo Criteria and What They Screen Out
David DiVincenzo's seven requirements were written to stop a specific over-claim. A quarter-century later they still screen architectures, and they still refuse to rank…
What Quantum Computing Actually Is
The 'tries every answer at once' story is wrong, and it leads to the wrong investments. A plain account of qubits, interference, and the…
Quantum Parallelism: What “All at Once” Leaves Out
Superposition holds many states. Parallelism applies one operation to all of them. Interference decides what survives measurement, and that last step is the whole…