QDCA stands for various terms. Discover the full forms, meanings, and possible interpretations of QDCA across different fields and industries.
The Quantum Dot cellular automation(QCA) uses arrays of coupled quantum dots to implement boolean logic functions. An individual quantum dot can be of the order of 10 nm in diameter, hence QCA devices are very small. Four quantum dots coupled by tunnel barriers are placed in a square array. This constitutes one QCA cell. Electrons can tunnel between the dots but can-not leave the cell. Two electrons are placed in each cell; Coulomb repulsion ensures that they Occupy opposite corners. hence there are two ground state configurations with the same energy; they can be labeled 0 and 1.
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