Journal ArticleDOI
High-performance multiplexer architecture for quantum-dot cellular automata
TLDR
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 QCAmultiplexing architectures.Abstract:
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.read more
Citations
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Journal ArticleDOI
Towards coplanar quantum-dot cellular automata adders based on efficient three-input XOR gate
TL;DR: A novel 3-input XOR gate structure is proposed based on half distance and cell interaction that promises extra low-power, extremely dense and high-speed structures at a nano scale and indicates the efficiency and robustness of the proposed designs.
Journal ArticleDOI
Design of an Efficient Multilayer Arithmetic Logic Unit in Quantum-Dot Cellular Automata (QCA)
TL;DR: A new special low-complexity QCA 4:1 multiplexer, which is application-specific to the proposed ALU, and a new QCA full adder is proposed based on the cell interaction, which outperform in comparison to counterpart designs in terms of cell number, area, latency, and power consumption.
Journal ArticleDOI
A unique structure for the multiplexer in quantum-dot cellular automata to create a revolution in design of nanostructures
TL;DR: In this paper, a unique structure for the 2:1 multiplexer is presented in QCA, which is simple, ultra-efficient and very useful to implement the various logical functions.
Journal ArticleDOI
A new three-level fault tolerance arithmetic and logic unit based on quantum dot cellular automata
TL;DR: A three-level fault-tolerant ALU based on QCA is discussed in this paper, which performs “AND’, “OR”, ‘XOR’ and “Full adder” and has high fault tolerance compared to the similar methods according to the simulation results using QCAdesigner.
Journal ArticleDOI
Novel Efficient Circuit Design for Multilayer QCA RCA
TL;DR: Two new multilayer QCA architectures are presented: one-bit FA and 4-bit Ripple Carry Adder (RCA), which provide improvements compared with other adder architectures in terms of cost, cell count, and area.
References
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Journal ArticleDOI
A device architecture for computing with quantum dots
Craig S. Lent,P.D. Tougaw +1 more
TL;DR: A new adiabatic switching paradigm is developed which permits clocked control, eliminates metastability problems, and enables a pipelined architecture.
Journal ArticleDOI
QCADesigner: a rapid design and Simulation tool for quantum-dot cellular automata
TL;DR: This paper describes a project to create a novel design and simulation tool for quantum-dot cellular automata (QCA), namely QCADesigner, which has already been used to design full-adders, barrel shifters, random-access memories, etc.
Journal ArticleDOI
The Robust QCA Adder Designs Using Composable QCA Building Blocks
TL;DR: This paper analyzes the reasons of the failures of adder designs using QCA technology, and proposes adders that exploit proper clocking schemes.
Journal ArticleDOI
Two-Dimensional Schemes for Clocking/Timing of QCA Circuits
TL;DR: In this article, different schemes for clocking and timing of the QCA systems are proposed; these schemes utilize 2D techniques that permit a reduction in the longest line length in each clocking zone.
Journal ArticleDOI
Modular Design of testable reversible ALU by QCA multiplexer with increase in programmability
TL;DR: The experimentation establishes that the proposed RALU outperforms the conventional reversible ALU in terms of programming flexibility and testability and is able to achieve 100% fault tolerance in the presence of single missing or additional cell defects in QCA layout.