pub fn qft_complexity_ty() -> Expr
QFTComplexity : ∀ n : Nat, QFTGateCount n ≤ Nat.pow n 2 The QFT on n qubits requires O(n²) gates.
QFTComplexity : ∀ n : Nat, QFTGateCount n ≤ Nat.pow n 2