Intrinsic Quantum Computation

James P. Crutchfield; Karoline Wiesner

doi:10.1016/j.physleta.2007.07.052

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arXiv · quant-ph/0611202

Intrinsic Quantum Computation

James P. Crutchfield·Karoline Wiesner

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Abstract

We introduce ways to measure information storage in quantum systems, using a recently introduced computation-theoretic model that accounts for measurement effects. The first, the quantum excess entropy, quantifies the shared information between a quantum process's past and its future. The second, the quantum transient information, determines the difficulty with which an observer comes to know the internal state of a quantum process through measurements. We contrast these with von Neumann entropy and quantum entropy rate and provide a closed-form expression for the latter for the class of deterministic quantum processes.

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BibTeX RIS

James P. Crutchfield, Karoline Wiesner. 2007-02-16. Intrinsic Quantum Computation. https://doi.org/10.1016/j.physleta.2007.07.052

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