Designing nanotechnology QCA-multiplexer using majority function-based NAND for quantum computing

摘要

Quantum-dot cellular automata (QCAs) are one of the most significant state-of-the-art technologies that have exhibited the potential to replace the complementary metal oxide semiconductor. QCA offers a variety of benefits over its conventional counterpart, including size, latency, and energy consumption. Meanwhile, multiplexers are crucial to the design of arithmetic and logic circuits, and NOT-AND (NAND) gates are universal gates that allow the design of any circuit. In this paper, we propose a new multiplexer based on three NAND gates in QCA. De Morgan's law is used to derive new equations and to design multiplexers using only NAND logics. The proposed circuit is designed and verified not only to minimize time and space complexity but also to minimize energy loss. Finally, we design an arithmetic circuit that is capable of performing various operations using the proposed multiplexer.