Towards single layer quantum-dot cellular automata adders based on explicit interaction of cells

Quantum-dot cellular automata (QCA) is the advent of technology and suitable replacement for semiconductor transistor technology. In this paper, a unique structure for the 2:1 multiplexer is presented in QCA. The structure of this component is simple, ultra-efficient and very useful to implement the various logical functions. The proposed structure does not follow any Boolean function. It takes advantage of the inherent characteristics of quantum technology to produce the desired output. Based on these principles, we design the new and efficient structures for the 4:1 multiplexer and 8:1 multiplexer in the QCA technology. These structures are designed with QCADesigner simulator and simulation results are examined. Investigation results indicate the amazing performance of proposed structure compared to existing structures in terms of area, complexity, power consumption and latency.

A unique structure for the multiplexer in quantum-dot cellular automata to create a revolution in design of nanostructures

Detection of Power Quality Event using Histogram of Oriented Gradients and Support Vector Machine

The quantum-dot cellular automata (QCA) technology is a promising alternative technology to CMOS technology to extend the exponential Moore's law progress of microelectronics at nanoscale level, which is expected to be beneficial for digital circuits. This paper presents and evaluates three multiplexer architectures: a new and efficient 2:1 multiplexer architecture, a 4:1 multiplexer architecture, and 8:1 multiplexer architecture in the QCA technology. The 4:1 and 8:1 QCA multiplexer architectures are proposed based on the 2:1 QCA multiplexer. The proposed architectures are implemented with the coplanar crossover approach. These architectures are simulated using the QCADesigner tool version 2.0.1. The 2:1, 4:1, and 8:1 QCA multiplexer architectures utilize 15, 107, and 293 cells, respectively. The simulation results demonstrate that the proposed QCA multiplexer architectures have the best performance in terms of clock delay, circuit complexity, and area in comparison with other QCA multiplexer architectures.

High-performance multiplexer architecture for quantum-dot cellular automata

Robust and efficient quantum-dot cellular automata synchronous counters

Towards modular design of reliable quantum-dot cellular automata logic circuit using multiplexers

Quantum-dot cellular Automata (QCA), a viable alternative to current CMOS, is gaining its prominence in digital circuit due to its very high device density and clocking speed. This work targets design of efficient logic circuits based on QCA multiplexer. The design capability of the multiplexer in QCA is investigated implementing XOR, XNOR logic gate and arithmetic logic unit. Further, efficient sequential circuits like D latch, T latch, D flip-flop, Scan flip-flop, shift registers are designed using QCA multiplexer. Results obtained supports the fact that the proposed designs achieve significant improvement in terms of device density, cell count as well as clock delay than that of the other previous designs.

Subhra Mazumdar

Papers

Towards modular design of reliable quantum-dot cellular automata logic circuit using multiplexers

Efficient realization of digital logic circuit using QCA multiplexer