Linear dynamical entropy and free-independence for quantized maps on the torus

Details Linear dynamical entropy and free-independence for quantized maps on the torus Linear dynamical entropy and free-independence for quantized maps on the torus

2006-11-08

arxiv.org/abs/quant-ph/0611092v1

Physics

Quantum Physics

7 pages, 5 figures

Scientific paper

We study the relations between the averaged linear entropy production in periodically measured quantum systems and ergodic properties of their classical counterparts. Quantized linear automorphisms of the torus, both classically chaotic and regular ones, are used as examples. Numerical calculations show different entropy production regimes depending on the relation between the Kolmogorov-Sinai entropy and the measurement entropy. The hypothesis of free independence relations between the dynamics and measurement proposed to explain the initial constant and maximal entropy production is tested numerically for those models.

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