Modelling and Simulation of a Reversible Quantum Logic based 4 × 4 Multiplier Design for Nanotechnology Applications

Abstract

Reversible logic has become one of the most suitable techniques in low power design because of its zero power dissipation property. Extensive research is underway to construct efficient reversible logic gates and reversible circuits such as adders, multipliers and dividers because of its wide applications in optical information processing, nanotechnology, DNA computing and quantum computation fields. In this paper, first a 4 × 4 reversible gate TKG is presented which has low quantum cost followed by the design of a 4-bit reversible multiplier. This multiplier design utilizes the proposed TKG to generate partial products and duplication of original bits, which not only eliminates the need of fan-out generation circuit but also reduces the delay of the circuit. Extensive comparisons of the proposed gate and multiplier are drawn with existing counter parts in the literature and it is envisaged that the proposed designs are efficient and also there is a significant improvement and reduction in the quantum cost of the circuit along with the delay due to the use of TKG Gate.