101 sequence detector using QCA technology

This paper mainly focuses on the implementation of finite state machine (FSM) using a novel Quantum-dot Cellular Automata (QCA) technology. More specifically, authors have designed a 101 sequence detector, which recognizes the pattern 101 as input and sets the output flag after receiving 101 sequences. This is the first attempt when a FSM is designed using this new robust technology and authors didn’t get any previous work on this topic. The whole analysis and designing of this topic is done in QCA Designer. First, the analysis of 101 FSM is done that concludes its state tables and state diagrams and ultimately come up with state equations. The next task is to implement the FSM’s equations in QCA technology. To implement the equations, majority gates, inverters, and D flip-flops are needed. Authors have used QCA designer-E software for the implementation of circuits and the calculation of energy simulation results.