Multiple choice
For qubit 0 after this circuit, what is ⟨X⟩, the X-axis projection of its Bloch vector?
const x0 = Math.PI / 3; const x1 = Math.PI / 4; const c = circuit(2); c.ry(x0, 0); c.ry(x1, 1); return c;
Commit your prediction for ⟨X⟩ of qubit 0 — then run it.