A Higher Radix Architecture for Quantum Carry-lookahead Adder

Siyi Wang, Anubhab Baksi, Anupam Chattopadhyay

In this paper, we propose an efficient quantum carry-lookahead adder based on the higher radix structure. For the addition of two $n$-bit numbers, our adder uses $O(n)-O(\frac{n}{r…