#qubits

CPU, GPU and QPU compared on bits, gates, memory, measurement, algorithms and errors, and why we can't simply replace CPUs with quantum processors.

A concept-building guide to the three ideas behind every quantum computer: state probabilities, correlations no classical bits can copy, and measurement.

Qubits, superposition, measurement, entanglement, gates and circuits explained from zero with a coin analogy, plus a first circuit you can run in your browser.