Abstract

As an alternative to CMOS technology, researchers have proposed new technologies like FINFET, CNTFET, MTJ\nto improve the performance of the system. This paper presents some emerging technologies over CMOS-VLSI. Also the new\npolarization based digital logic design with quantum dots called Quantum dot Cellular Automata i.e. QCA is described here.\nIn this new computing paradigm QCA cell is the fundamental unit to design logic structure in quantum domain. This\ntechnology achieves an effective design of logic circuits using QCA. In this paper basic QCA structures are designed with\nminimum number of QCA cells and with minimum complexity. So these structures can be used to design and simulate\ncomplex circuits in digital system. The simulation of the present work is done by QCA designer tool which facilitate rapid\nand accurate simulation.