Thermal behavior of Quantum Cellular Automaton wires

Details Thermal behavior of Quantum Cellular Automaton wires Thermal behavior of Quantum Cellular Automaton wires

1999-11-29

arxiv.org/abs/cond-mat/9911463v1

Physics

Condensed Matter

15 pages, 7 figures, uses revtex

Scientific paper

10.1063/1.372987

We investigate the effect of a finite temperature on the behavior of logic circuits based on the principle of Quantum Cellular Automata (QCA) and of ground state computation. In particular, we focus on the error probability for a wire of QCA cells that propagates a logic state. A numerical model and an analytical, more approximate, model are presented for the evaluation of the partition function of such a system and, consequently, of the desired probabilities. We compare the results of the two models, assessing the limits of validity of the analytical approach, and provide estimates for the maximum operating temperature.

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