Quantum-dot Cellular Automata (QCA): A Survey

TL;DR

This survey reviews Quantum-dot Cellular Automata (QCA) as a promising Beyond CMOS technology, covering its background, implementation, simulation tools, defect testing, and future research directions.

Contribution

It provides a comprehensive overview of QCA technology, including current state, challenges, and potential research areas, serving as a foundational reference for future work.

Findings

QCA is a viable transistor-less computing paradigm for Beyond CMOS.

Various simulation and synthesis tools for QCA are available.

Research on defects and testing in QCA is actively evolving.

Abstract

In the near future the era of Beyond CMOS will start as the scaling of the current CMOS technology will reach the fundamental limit. QCA (Quantum-dot Cellular Automata) is the transistor less computation paradigm and viable candidate for Beyond CMOS device technology. The complete state of art survey on QCA is presented in this paper. This paper addresses the QCA background, its possible implementation and available simulation and synthesis tools. In depth survey is carried out for the QCA oriented defects and testing. Also, need of development and possible research areas in various sides of QCA are discussed.