Towards the Design and Analysis of Multiplexer/Demultiplexer Using Quantum Dot Cellular Automata for Nano Systems

Quantum dot Cellular Automata (QCA) is a rapidly developing nanotechnology that offersultra-low energy loss, increased speed, and incredibly tiny area requirements. The two most important building blocks of QCA nano computing are the multiplexer and demultiplexer. The performance of new 2:1 multiplexer and 1:2 demultiplexer QCA layouts was investigated in this study. For a better performance study, two methodologies were used to measure energy loss, and alternative cost functions were explored. Total energy losses of 14.30 meV and 7.37 meV for the proposed multiplexer and demultiplexer, respectively, were detected using the software QDADesigner-E (QDE) in the Coherence vector simulation mode applying the Runge Kutta approximation technique. According to QCAPro, at the tunneling level 0.5EK and temperature 2K, the total energy loss of the multiplexer and the demultiplexer is 35.60 meV and 37.19 meV, respectively. Cost functions for both experimental items were also calculated in three different methods.