Journal ArticleDOI
Bistable saturation in coupled quantum‐dot cells
TLDR
In this article, a model quantum dot cells are investigated as potential building blocks for quantum cellular automata architectures and the effects of nonzero temperature on the response of a model cell are investigated.Abstract:
Model quantum dot cells are investigated as potential building blocks for quantum cellular automata architectures. Each cell holds a few electrons and interacts Coulombically with nearby cells. In acceptable cell designs, the charge density tends to align along one of two cell axes. Thus, a cell ‘‘polarization,’’ which can be used to encode binary information, is defined. The polarization of a cell is affected in a very nonlinear manner by the polarization of its neighbors. This interaction is quantified by calculating a cell–cell response function. Effects of nonzero temperature on the response of a model cell are investigated. The effects of multiple neighbors on a cell are examined and programmable logic gate structures based on these ideas are discussed.read more
Citations
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Journal ArticleDOI
Logical devices implemented using quantum cellular automata
P. Douglas Tougaw,Craig S. Lent +1 more
TL;DR: This work examines the possible implementation of logic devices using coupled quantum dot cells, which use these cells to design inverters, programmable logic gates, dedicated AND and OR gates, and non‐interfering wire crossings.
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
Dynamic behavior of quantum cellular automata
P. Douglas Tougaw,Craig S. Lent +1 more
TL;DR: In this paper, the authors examine the dynamic behavior of quantum cellular automata, arrays of artificial quantum-dot cells that can be used to perform useful computations, and they develop several approximate techniques for reducing the size of the basis set required.
Journal ArticleDOI
Coherent electronic transfer in quantum dot systems using adiabatic passage
Andrew D. Greentree,Andrew D. Greentree,Jared H. Cole,Alex R. Hamilton,Lloyd C. L. Hollenberg +4 more
TL;DR: In this article, the authors describe a scheme for using an allelectrical, rapid, adiabatic population transfer between two spatially separated dots in a triple-quantum dot system.
Journal ArticleDOI
Design Tools for an Emerging SoC Technology: Quantum-Dot Cellular Automata
Konrad Walus,Graham A. Jullien +1 more
TL;DR: The initial development of a tool to automate the design of one of the promising emerging nanoelectronic technologies, quantum-dot cellular automata, which has been proposed as a computing paradigm based on single electron effects within quantum dots and molecules is examined.
References
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Journal ArticleDOI
Cellular neural networks: theory
Leon O. Chua,L. Yang +1 more
TL;DR: In this article, a class of information processing systems called cellular neural networks (CNNs) are proposed, which consist of a massive aggregate of regularly spaced circuit clones, called cells, which communicate with each other directly through their nearest neighbors.
Journal ArticleDOI
Quantum Cellular Automata
TL;DR: In this article, the authors proposed a new paradigm for computing with cellular automata (CAS) composed of arrays of quantum devices, which is called edge driven computing (EDC), where input, output and power are delivered at the edge of the CA array only; no direct flow of information or energy to internal cells is required.
Book
Cellular Automata Machines: A New Environment for Modeling
Tommaso Toffoli,Norman Margolus +1 more
TL;DR: This book provides a laboratory in which the ideas presented in this book can be tested and applied to the synthesis of a great variety of systems, including practical applications involving parallel computation and image processing.
Journal ArticleDOI
Measurements of Coulomb blockade with a noninvasive voltage probe.
Mark Field,Charles G. Smith,Michael Pepper,David A. Ritchie,J. E. F. Frost,G. A. C. Jones,David G. Hasko +6 more
TL;DR: The behavior of a laterally confined quantum dot in close proximity to a one-dimensional channel in a separate electrical circuit is investigated, finding the activation energy of transport through the dot is much lower than expected.
Journal ArticleDOI
Bistable saturation in coupled quantum dots for quantum cellular automata
TL;DR: In this article, a simple model quantum dot cell containing two electrons is analyzed as a candidate for quantum cellular automata implementations and the cell has eigenstates whose charge density is strongly aligned along one of two directions.