Quantum cellular automata (QCA) is a new technology in nanometre scale (<18nm) to support nano technology. QCA is very effective in terms of high space density and power dissipation and will be playing a major role in the development of the Quantum computer with low power consumption and high speed. This paper describes the design and layout of a 2-bit ALU based on quantum-dot cellular automata...

Quantum dot cellular automata (QCA) is one of the emerging technologies in the area of nanoelectronics and is found to be an attractive alternative to conventional CMOS technology for several reasons. However, there have been no reports in the literature so far on QCA implementation of conventional reversible gates. In this work, we propose a novel and systematic approach for the QCA implementa...

We present a simulator for quantum cellular automaton (QCA) circuits, based on a semiclassical model and aimed at the determination of the error probability in the presence of thermal excitations. Di erent methods are discussed; either a complete exploration of the con guration space, or a partial exploration by means of simulated annealing. Results for the probability of obtaining the ground s...

Design paradigms of logic circuits with Quantum-dot Cellular Automata (QCA) have been extensively studied in the recent past. Unfortunately, due to the lack of mature fabrication support, QCA-based circuits often suffer from various types of manufacturing defects and variations, and therefore, are unreliable and error-prone. QCA-based Exclusive-OR (XOR) gates are frequently used in the construc...

Quantum-dot cellular automata (QCA) is important technology to be replaced with CMOS. QCA is a new paradigm for digital computing that, theoretically, is expected to reach very high operating frequencies and significant reduction of power consumption. A multiplexer is an important element and it is used in many logic gates and functional circuits. A NAND gate is smaller, area-wise and faster th...

Conventional lithography-based VLSI design technology deployed to optimize low-powered-computing and higher scale integration of semiconductor components. However, this downscaling trend confronts serious challenges of tunneling and leakage current increment to the Complementary Metal-Oxide-Semiconductor (CMOS) technology on nanoscale regimes. To resolve the physical restriction of the CMOS, Qu...

Quantum-dot cellular automaton (QCA) is a novel nanotechnology that provides a very different computation platform than traditional CMOS, in which polarization of electrons indicates the digital information. This paper demonstrates designing combinational circuits based on quantum-dot cellular automata (QCA) nanotechnology, which offers a way to implement logic and all interconnections with onl...

Abstract In the design of digital logic circuits, QCA technology is an excellent alternative to CMOS technology. Its advantages over include low power consumption, fast circuit switching, and nanoscale design. Circuits that convert data between different formats are code converters. Code converters have essential role in high-performance computing signal processing. this paper, first, we propos...