A novel QCA multiplexer design

Quantum-dot Cellular Automata is a novel nanotechnology that promises extra low-power, extremely dense and high speed structure for construction of logical circuits at a nano-scale. Moreover, multiplexer is a useful component for the design of many important circuits. This paper proposes a novel and efficient design of 2:1 multiplexer in the QCA. The proposed multiplexer has been compared to few recent designs in terms of area, speed and complexity. Comparison of results illustrates significant improvements in our design as compared to traditional approaches. Also, simulation proves that the proposed multiplexer design is completely robust and more sustainable to high input frequency, as compared to other designs. Simulations have been carried out using the QCA Designer, a layout and simulation tool for QCA.