Multiple choice
For qubit 0 after this circuit, what is ⟨X⟩, the X-axis projection of its Bloch vector?
const c = circuit(1); c.ry(Math.PI / 3, 0); c.ry(-2 * Math.PI / 3, 0); c.measure(); return c;
Commit your prediction for ⟨X⟩ of qubit 0 — then run it.