Robust and Compact Reversible Logic Gate for Low-Power and High-Performance Computing

Reversible logic is a design paradigm suitable to energy-efficient digital systems and has lately received recognition as a viable option for designing sophisticated digital applications. It possesses the capacity to revolutionize progress in quantum and low-power computing. This research presents an innovative reversible gate designed with merely 10 transistors. The suggested gate includes capabilities for several logic operations such as XOR, XNOR, NOT, NAND, NOR, and half-adder. This proposed design can attain a minimal quantum cost, which is strongly advocated in quantum computing. We have verified the design's resilience using Monte Carlo and process corner analysis after modeling it with Cadence Virtuoso at 45 nm technology and 1 V supply voltage. This confirms the robustness of the design amidst variation. In contrast to current reversible gates, the proposed structure achieves a 18% reduction in delay and a 12% reduction in power delay product, rendering it an appealing option for high-speed and low-energy circuit design. To illustrate its adaptability in alternative designs, we have utilized it to the construction of a 4-bit binary-to-Gray code converter circuit.