Compose a circuit on the wires below and watch the genuine quantum state — every complex amplitude, every phase, and each qubit’s Bloch vector — update live. Grover is loaded as a starting example.
A vector touching the surface is a definite single-qubit state. When it shrinks toward the center, that qubit is entangled with the others — its information lives in the whole system, not in itself.
Collapse the wavefunction repeatedly to see the Born-rule statistics emerge from the amplitudes above.
This is a faithful classical simulation of quantum mechanics — the same linear algebra a real device obeys — running entirely in your browser. It is not a quantum computer: the state vector grows as 2n, so classical simulation hits a wall around 25–30 qubits. That wall is exactly why quantum hardware matters.