Implementation of Multilayer Based Reversible Gate Using Quantum-Dot Cellular Automata

A quantum-dot cellular automata(QCA) is important technology to be with CMOS. QCA is expected to reach very high operating frequencies and significant reduction of power consumption. Reversible logic is an one-to-one mapping between the input and output vectors. Reversible logic is significant in QCA circuit with almost zero power dissipation. In this paper we propose a new reversible gate using multilayer structure. The multilayer based wirecrossing technique uses crossover bridge technique. The structure of this technique can be more miniaturized than coplanar based structure. Our proposed reversible gate requres only 102 cell counts, which is 58.5% more area efficient than the previous work. The main target of designing reversible gate is to decrease the number of cells. Our new reversible gate is suitable for design a reversible full adder.