Enhanced Qca Design: Innovative Xor Gate and Optimized Circuits for Binary to Gray Code Conversion and Vedic Multiplication

Abstract Quantum-dot Cellular Automata (QCA) is considered an alternative technology to CMOS (Complementary Metal Oxide Semiconductor) due to its potential for ultra-low power consumption and high-speed operation. This work presents the design of a new XOR gate based on the concept of half distance-based cell interactions. Additionally, the digital circuits of the Binary to Gray Code converter and Vedic Multiplier have been designed using the proposed XOR gate. The Binary to Gray Code converter is a fundamental component in digital systems that facilitates efficient communication between binary and Gray Code representations. The Vedic Multiplier is a crucial arithmetic unit extensively used in modern digital signal processing and computing systems. The evaluation of the proposed circuits confirms that they work properly and are better in terms of the number of dots, area, and latency.