title: Efficient QCA Exclusive-or and Multiplexer Circuits Based on a Nanoelectronic-Compatible Designing Approach.
abstract: Quantum-dot cellular automata (QCA) are a transistorless computation approach which encodes binary information via configuration of charges among quantum dots. The fundamental QCA logic primitives are majority and inverter gates which can be utilized to design various QCA circuits. This study presents a novel approach to designing efficient QCA-based circuits based on Boolean expressions achieved from reconfiguration of five-input and three-input majority gates. Whereas the multiplexer and Exclusive-or are the most important fundamental logical circuits in digital systems, designing efficient and single layer structures without coplanar cross-over wiring is advantageous in QCA technology. In order to demonstrate the efficiency and usefulness of the proposed approach, simple and dense multiplexer and Exclusive-or structures are implemented. The proposed designs have significant improvement in terms of area, complexity, latency, and gate count in comparison to previous designs. The correct logical functionalities of presented structures have been authenticated using QCA designer tool.
authors.affiliation: Department of Computer, Faculty of Engineering, Persian Gulf University, Bushehr 7516913817, Iran.
authors.forename: Amir Mokhtar
authors.identifier: 0000-0002-7546-7567
authors.initials: AM
authors.lastname: Chabi
authors.affiliation: Faculty of Computer Engineering, Islamic Azad University, South Tehran Branch, Tehran 443511365, Iran; School of Computer Science, Institute for Research in Fundamental Sciences (IPM), Tehran 1953833511, Iran.
authors.forename: Samira
authors.initials: S
authors.lastname: Sayedsalehi
authors.affiliation: School of Computer Science, Institute for Research in Fundamental Sciences (IPM), Tehran 1953833511, Iran.
authors.forename: Shaahin
authors.initials: S
authors.lastname: Angizi
authors.affiliation: School of Computer Science, Institute for Research in Fundamental Sciences (IPM), Tehran 1953833511, Iran.
authors.forename: Keivan
authors.initials: K
authors.lastname: Navi