Computation of mutual entropy in quantum markov chains |
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Authors: | Luigi Accardi Masanori Ohya Hiroki Suyari |
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Affiliation: | (1) Dipartimento di Matematica, Centro Malematico V. Volterra, Universitá di Roma II, Italy;(2) Department of Information Sciences, Science University of Tokyo, Japan |
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Abstract: | There are several damping phenomena in quantum optics. Such phenomena have been usually explained by open systems. In statistical physics, open system dynamics have been used to study the irreversibility and the approach to equilibrium. In this paper, the dynamical change of the mutual entropy for an open system, frequently studied in the quantum optics literature, is rigorously computed through a model of quantum Markov chain. In particular, the concrete formula of Stinespring expression for such a model is obtained and applied to the derivation of the mutual entropy, and some computational results are presented. |
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