Multiple choice
After running this circuit, what is the expectation value ⟨X⟩ of qubit 0 (its Bloch X-component)?
const c = circuit(2); // input |0> on q0 (default) c.h(1); // ancilla |+> c.cz(0, 1); // entangle the edge c.h(0); // rotate q0 into the X-measurement basis return c;
Commit your prediction for ⟨X⟩ of qubit 0 — then run it.