The quantum-dot cellular automata (QCA) is considered as an alternative tocomplementary metal oxide semiconductor (CMOS) technology based on physicalphenomena like Coulomb interaction to overcome the physical limitations of thistechnology. The decoder is one of the important components in digital circuits, whichcan be used in more comprehensive circuits such as full adde...

Quantum Cellular Automata (QCA) has proposed an exclusive architecture, where two coplanar perpendicular wires have the ability to intersect one another without signal degradation. The physical realization of cross wire architectures has yet to be implemented and researchers share concerns over the reliability of such a system. Here we have designed a coplanar cross wire layout for Magnetic Cel...

The computation approach known as quantum-dot cellular automata (QCA) is based on encoding binary information in the charge configuration of quantum-dot cells. This paradigm provides a possible route to transistor-less electronics at the nano-scale. QCA devices using single-electron switching in metal-dot cells have been fabricated. Here we examine the limits of switching speed and temperature ...

A quantum-dot cellular automata(QCA) is important technology to be with CMOS. QCA is expected to reach very high operating frequencies and significant reduction of power consumption. Reversible logic is an one-to-one mapping between the input and output vectors. Reversible logic is significant in QCA circuit with almost zero power dissipation. In this paper we propose a new reversible gate usin...

Quantum cellular automata (QCA) consist in an array of identical finite-dimensional quantum systems. The whole array evolves in discrete time steps by iterating a unitary operator G. Moreover this global evolution G is shift-invariant (acts everywhere the same), and local (information can only be transmitted at a bounded speed). Whilst this axiomatic definition is clearly the natural ‘quantizat...

Quantum-Dot Cellular Automata (QCA) is a radical technology, which works at Nanoscale. Due to its numerous advantages over the conventional CMOS-based digital circuits, researchers are now concentrating more on designing digital circuits using this technology. Researchers have reported various findings in this field till now. In this paper, a modular 2:1 Multiplexer has been designed followed b...

Article history: Received 20 May 2013 In final form 9 July 2013 Available online 16 July 2013 Molecular quantum-dot cellular automata (QCA) paradigm is a promising approach to molecular electronics. QCA cells can be implemented using mixed-valence compounds. However, the existence of counterions can perturb the local electric field and thus is detrimental to information encoding and processing....

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...

In this paper, different circuits of Quantum-dot Cellular Automata (QCA) are proposed for the so-called coplanar crossing. Coplanar crossing is one of the most interesting features of QCA because it allows for mono-layered interconnected circuits, whereas CMOS technology needs different levels of metalization. However, the characteristics of the coplanar crossing make it prone to malfunction du...

One can think of some physical evolutions as being the emergent-effective result a microscopic discrete model. Inspired by classical coarse-graining procedures, we provide simple procedure to coarse-grain color-blind quantum cellular automata that follow Goldilocks rules. The consists in (i) space-time grouping automaton (QCA) cells size $N$; (ii) projecting states cell onto its borders, connec...