Reversible Gates in Emerging Quantum-dot Cellular Automata Technology: An Innovative Approach to Design and Simulation

TL;DR

This paper introduces a multi-objective design method for reversible gates in quantum-dot cellular automata, improving power efficiency and performance over existing approaches through detailed logical and layout analysis.

Contribution

It presents a novel multi-objective design approach for reversible QCA gates, optimized at logical and layout levels, outperforming previous methods in multiple parameters.

Findings

The proposed method reduces power dissipation in QCA circuits.

It achieves improvements in area, complexity, and delay compared to existing approaches.

The approach is validated through detailed logical and layout level analysis.

Abstract

Power dissipation is known as the most notable limiting factor in all nano-electronic design techniques including Quantum-dot Cellular Automata (QCA). The familiar reversible computing approach is used as a reasonably reliable solution, mitigating power dissipation. This study presents, a comprehensive multi-objective method for designing R-Fs in emerging QCA technology. The results are investigated in both logical and layout levels, in detail. The results verify that the approach offered in this study has advantage over the most efficient approaches available in the literature by far. This comparison can be made on various parameters ranging from area, complexity (cell amount), delay (clocking zones), and to even logical levels including levels, Control inputs, the number of majority and NOT gates.