Multiple choice
Run this circuit. What is qubit 0's Bloch X-component — the expectation value ⟨X⟩?
const c = circuit(2); c.h(0); c.cp(Math.PI / 2, 0, 1); c.h(1); c.swap(0, 1); return c;
Commit your prediction for ⟨X⟩ of qubit 0 — then run it.
const c = circuit(2); c.h(0); c.cp(Math.PI / 2, 0, 1); c.h(1); c.swap(0, 1); return c;
Commit your prediction for ⟨X⟩ of qubit 0 — then run it.