Design of Area Efficient Multilayer Reversible ALU with Energy Estimation using QCA

Abstract

Abstract Quantum-dot Cellular Automata (QCA) is a transistor-less technology in which the information passes using a technique that requires the breeding of a polarization state from one circuit element to another, and computations take place without current. The reversible logic circuits potentially overcome the extreme power dissipation problem in CMOS circuits in quantum computing. In any computation system, the core part of the system is the Arithmetic and Logic Unit (ALU). This paper proposes a QCA technology-based reversible ALU using the Peres and Double Peres gates and implements multilayer architecture. It performs 29 operations, including logic operations, addition, increment, and subtraction. This ALU contains 199 cells with 2.5 clocks of latency. In comparison to existing research, the proposed multilayer ALU architecture improves the cell count and area by 20% and 66%, respectively. The total energy dissipation of the design is \(8.24e-02 eV\). QCA Designer 2.0.3 is used to simulating the proposed ALU architectures.