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Quantum-dot Cellular Automata

Published online by Cambridge University Press:  17 March 2011

Gregory L. Snider ,
Alexei O. Orlov ,
Ravi K. Kummamuru ,
Rajagopal Ramasubramaniam ,
Islamshah Amlani ,
Gary H. Bernstein  and
Craig S. Lent
Gregory L. Snider
Affiliation:
Department of Electrical Engineering University of Notre Dame, Notre Dame, IN 46556
Alexei O. Orlov
Affiliation:
Department of Electrical Engineering University of Notre Dame, Notre Dame, IN 46556
Ravi K. Kummamuru
Affiliation:
Department of Electrical Engineering University of Notre Dame, Notre Dame, IN 46556
Rajagopal Ramasubramaniam
Affiliation:
Department of Electrical Engineering University of Notre Dame, Notre Dame, IN 46556
Islamshah Amlani
Affiliation:
Department of Electrical Engineering University of Notre Dame, Notre Dame, IN 46556
Gary H. Bernstein
Affiliation:
Department of Electrical Engineering University of Notre Dame, Notre Dame, IN 46556
Craig S. Lent
Affiliation:
Department of Electrical Engineering University of Notre Dame, Notre Dame, IN 46556
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Abstract

An overview is given of the quantum-dot cellular automata (QCA) architecture, along with a summary of experimental demonstrations of QCA devices. QCA is a transistorless computation paradigm that can provide a solution to such challenging issues as device and power density. The basic building blocks of the QCA architecture, such as AND, OR gates and clocked cells have been demonstrated and will be presented here. The quantum dots used in the experiments to date are metal islands that are coupled by capacitors and tunnel junctions, and devices operate only at very low temperatures. For QCA to be used in practical devices, the operating temperature must be raised, and issues such as background charge must be addressed. An introduction will be given to these issues and possible solutions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 696: Symposium N – Current Issues in Heteroepitaxial Growth--Stress Relaxation and Self Assembly , 2001 , N7.6
Copyright
Copyright © Materials Research Society 2002

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