Predict the output
This circuit is sampled for 1024 shots on the seeded simulator (seed 6483). How many of the shots come out |01⟩? Estimate P(|01⟩) × 1024 and pick the closest option.
// Start from |00>. Flip qubit 1 to reach |01>. // Hadamard on qubit 0 gives (|01> + |11>)/sqrt(2). // CNOT(0->1) gives (|01> + |10>)/sqrt(2) (the symmetric combination). // A Z on qubit 0 flips the sign of the |1..> branch, turning + into -, // yielding (|01> - |10>)/sqrt(2). const c = circuit(2); c.x(1); c.h(0); c.cx(0, 1); c.z(0); return c;
Commit your prediction for counts of |01⟩ over 1024 shots — then run it.