Multiple choice
Execute the circuit and measure. How likely is the outcome |1⟩?
const c = circuit(1); c.x(0); // |1⟩ c.h(0); // H|1⟩ = |−⟩ c.h(0); // rotate back: H|−⟩ = |1⟩ c.measure(); return c;
Commit your prediction for P(|1⟩) — then run it.
const c = circuit(1); c.x(0); // |1⟩ c.h(0); // H|1⟩ = |−⟩ c.h(0); // rotate back: H|−⟩ = |1⟩ c.measure(); return c;
Commit your prediction for P(|1⟩) — then run it.