Quantum Algorithm Design, Constraint Satisfaction, Quantum Computing, Computer Science.
achieved by a ripple-carry circuit (https://en.wikipedia.org/wiki/Adder_(electronics)#Ripple-carry_adder) or by usage of the Quantum Fourier Transform (see this paper: https://arxiv.org/pdf/1411.5949.pdf). Different implementations have different characteristics in terms of the number of qubits