Quantum-dot cellular automata (QCA) are prospective nanotechnology with striking performance to tackle the shortcomings of complementary metal-oxide-semiconductor (CMOS) transistor-based technology such as fabrication dimensions and switching speed. The demultiplexer, a crucial component for design many logic circuits, comprises circuit separating multiplex data into data. demultiplexer is high...

While the end of Moore’s law has been predicted for many years, it appears that transistors may finally hit physical scaling limits and packing densities in the next ten to twenty years. This possibility has led to the development of many nanoelectronic devices such as carbon nanotubes, single electron transistors, molecular transistors, and quantum-dot cellular automata (QCA) among others. One...

The authors present a novel memory architecture for quantum-dot cellular automata (QCA). The proposed architecture combines the advantage of reduced area of a serial memory with the reduced latency in the read operation of a parallel memory, hence its name is ‘hybrid’. This hybrid architecture utilises a novel arrangement in the addressing circuitry of the QCA loop for implementing the memory-i...

The limits and difficulties looked by CMOS innovation in the nano system has prompted exploration of other potential advancements which can work with same functionalities anyway lower power scattering higher speed. One such technology is Quantum dot Cellular Automata (QCA). In this paper, QCA explored to design authentication system. This paper first presents basic operating principle a Fingerp...

Quantum-dot Cellular Automata (QCA) provide very high scale integration potential, switching frequency, and have extremely low power demands, which make the QCA technology quite attractive for design implementation of large-scale, high-performance nanoelectronic circuits. However, state-of-the-art circuit designs were not derived by following a set universal rules, as is case CMOS circuits, and...

Rapid progress in the field of nanotechnology includes using quantum dot-cellular automata (QCA) as a replacement for conventional transistor-based complementary metal oxide semiconductor (CMOS) circuits construction nano-circuits. Due to ultra low thermal dissipation, rapid clocking, and extremely high density, QCA is rapidly growing nanotechnological inhibit effect transistor (FET)-based circ...

One-dimensional quantum cellular automata (QCA) consist in a line of identical, finite dimensional quantum systems. These evolve in discrete time steps according to a local, shift-invariant unitary evolution. By local we mean that no instantaneous long-range communication can occur. In order to define these over a Hilbert space we must restrict to a base of finite, yet unbounded configurations....

Over the last two decades , quantum-dot cellular automata (QCA) has received significant attention as an emerging computing technology (Lent et al., 1993). The basic elements in this technology are the QCA cells, as shown in Fig. 1. Each cell contains two mobile electrons and four quantum dots located in the corners. As per the occupancy of the electrons in the dots, a QCA cell can take differe...

Quantum-dot cellular automata (QCA) is a newly-developed nanotechnology for next-generation nanoelectronic circuits. QCA circuits use the propagation of charge polarity in QCA cells to pass information without any current being involved. It has the advantages of extremely small size, low power consumption, high device density and twinkling operation process. Nanofabrication of QCA circuits may ...

Devices based on Quantum-dot Cellular Automata (QCA) computational approach [ 11 use interacting quantum dots to encode and process binary information. In this transistorless approach to computation, logic levels are represented by the configurations of single electrons in coupled quantum-dot systems. In the last few years, significant progress has been made towards the realization of basic QCA...