Predict the output
Run 1024 seeded shots of this circuit (seed 3986). Predict how many give |000000000⟩. Estimate P(|000000000⟩) × 1024 and pick the closest option.
const c = circuit(9); // Outer phase-flip layer: copy qubit 0 onto the block leaders 3 and 6. c.cx(0, 3); c.cx(0, 6); // Put each block leader into the |+> sublattice. c.h(0); c.h(3); c.h(6); // Inner bit-flip layer: expand each leader into a (|000>+|111>) block. c.cx(0, 1); c.cx(0, 2); c.cx(3, 4); c.cx(3, 5); c.cx(6, 7); c.cx(6, 8); return c;
Commit your prediction for counts of |000000000⟩ over 1024 shots — then run it.