2007 | OriginalPaper | Buchkapitel
Computation in Sofic Quantum Dynamical Systems
verfasst von : Karoline Wiesner, James P. Crutchfield
Erschienen in: Unconventional Computation
Verlag: Springer Berlin Heidelberg
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We analyze how measured quantum dynamical systems store and process information, introducing sofic quantum dynamical systems. Using recently introduced information-theoretic measures for quantum processes, we quantify their information storage and processing in terms of
entropy rate
and
excess entropy
, giving closed-form expressions where possible. To illustrate the impact of measurement on information storage in quantum processes, we analyze two spin-1 sofic quantum systems that differ only in how they are measured.