1999•Microelectronic EngineeringOpen access

Quantum-dot cellular automata

Gregory L. Snider, Alexei O. Orlov, Ishamshah Amlani, Gary H. Bernstein, Craig S. Lent, James L. Merz, Wolfgang Porod

Abstract

An introduction to the operation of quantum-dot cellular automata is presented, along with recent experimental results. Quantum-dot cellular automata (QCA) is a transistorless computation paradigm that addresses the issues of device density and interconnection. The basic building blocks of the QCA architecture, such as AND, OR, and NOT are presented. The experimental device is a four-dot QCA cell with two electrometers. The dots are metal islands, which are coupled by capacitors and tunnel junctions.

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Key concepts: Quantum dot cellular automaton, Quantum cellular automaton, Cellular automaton, Quantum dot, Interconnection, Computer science, Computation, Quantum computer