Design of A ternary barrel shifter using multiple-valued reversible logic

Abstract

Multiple-valued reversible logic is emerging as a promising computing paradigm as it helps in reducing the width of the reversible or quantum circuits. Further, a barrel shifter that can shift and rotate multiple bits in a single cycle forms the essence of many computing systems. In this paper, we propose an efficient architecture and design of a reversible ternary barrel shifter. The ternary barrel shifter is realized using the Modified Fredkin gates (MFG) and the ternary Feynman gates. The design is evaluated in terms of quantum cost, the number of garbage outputs and the number of ancilla bits. To our knowledge, the use of multiple valued reversible logic for the design of a barrel shifter is being attempted for the first time in the literature.