The new architecture for quantum cellular automata is offered. A QCA cell includes two layers nc-Si, divided by a dielectric. Among themselves cells are connected by the bridge from a conductive material. The comparison is made between this and QCA, offered earlier by C. Lent's group. Keywords—quantum cellular automata (QCA), nc-Si, Si/SiO2 superlattices, parallel computing

Recently testing of Quantum-dot Cellular Automata (QCA) Circuits has attracted a lot of attention. In this paper, QCA is investigated for testable implementations of reversible logic. To amplify testability in Reversible QCA circuits, a test method regarding to Built In Self Test technique is developed for detecting all simulated defects. A new Reversible QCA MUX 2×1 desig...

The Q-Credit Assignment (QCA) is a method, based on Q-learning, for allocating credit to rules in Classiier Systems with internal state. It is more powerful than other proposed methods, because it correctly evaluates shared rules, but it has a large computational cost, due to the Multi-Layer Perceptron (MLP) that stores the evaluation function. We present a method for reducing this cost by redu...

Quantum Cellular Automata is a promising nanotechnology that has been recognized as one of the top six emerging technology in future computers. We have developed a new methodology in design QCA 2:1 MUX having better area efficiency and less input to output delay. We have also shown that using this QCA 2:1 MUX as a unit higher MUX can also be designed. We verified the proposed design using simul...

The computational paradigm known as quantum-dot cellular automata (QCA) encodes binary information in the charge configuration of Coulomb-coupled quantum-dot cells. Functioning QCA devices made of metal-dot cells have been fabricated and measured. We focus here on the issue of robustness in the presence of disorder and thermal fluctuations. We examine the performance of a semi-infinite QCA shif...

We can overcome the CMOS scaling problems with emerging Nanotechnology. In Nanotechnology the basic building block of digital design is QCA. The problem in design of decimal adders on Quantum dot cellular automata with reduction of QCA primitives is very limited. In this paper we present a BCD adder with less number of QCA primitives and it is compared with existing BCD adder designs. Our propo...

Quantum Cellular Automata (QCA) is one of the emerging nanotechnologies in which it is possible to implement reversible logic gates. QCA makes it possible to achieve high performance beyond the limits of existing CMOS technology. QCA does not have to dissipate its signal energy during transition. Further, there is no movement of electrons from one QCA cell to the other, there is no current flow...

The CMOS transistor has reached the molecular level due to the continuous miniaturization. With devices that small, problems in manufacturing and functionality appear. Since quantum effects become prevalent, technology that would take advantage of them is desirable. One of the proposed novel technologies is the quantum-dot cellular automaton (QCA) [1, 2]. Its basic building block is a QCA cell ...

Integrated Circuit (IC) Technology is growing day by day to enhance the circuit performance and to increase the density for compact systems. Conventional CMOS technology is playing a vital role in digital computation for past four decades. But there are certain challenges in scaling the CMOS devices for the last few years. A novel technology “Quantum dot Cellular Automata (QCA)” has been identi...

Quantum-dot cellular automata (QCA), a computation paradigm based on the Coulomb interactions between neighboring cells. The key idea is to represent binary information, not by the state of a current switch (transistor), but rather by the configuration of charge in a bistable cell. In its molecular realization, the QCA cell can be a single molecule. QCA is ideally suited for molecular implement...