Design of a logically reversible half adder using 2D 2-dot 1-electron QCA

Abstract

Among the emerging technologies in the nanotechnology domain, quantum-dot cellular automata (QCA) is an important name. It overcomes the serious technical limitations of CMOS. In this article, we have used two-dimensional 2-dot 1-electronQCAcells, a variant of two-dimensional 4-dot 2-electronQCAcells, to design a logically reversible half adder. Potential energies have been computed to substantiate and analyse the proposed design. The issues related to energy and power dissipation have also been discussed. Finally, our proposed architecture using 2-dot 1-electron QCA cells has been compared with the architecture using 4-dot 2-electron QCA cells.