Performance Evaluation of Efficient XOR Structures in Quantum-Dot Cellular Automata (QCA)

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Provided by: Scientific Research Publishing
Topic: Hardware
Format: PDF
Quantum-dot Cellular Automaton (QCA) is an emerging, promising, future generation nano-electronic computational architecture that encodes binary information as electronic charge configuration of a cell. It is a digital logic architecture that uses single electrons in arrays of quantum dots to perform binary operations. Fundamental unit in building of QCA circuits is a QCA cell. A QCA cell is an elementary building block which can be used to build basic gates and logic devices in QCA architectures. This paper evaluates the performance of various implementations of QCA based XOR gates and proposes various novel layouts with better performance parameters.
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