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Joint entropy and decoherence without dissipation in a driven harmonic oscillator

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Abstract.

The joint entropy of a non-dissipative driven harmonic oscillator for both the single and the double Gaussian states is determined. It is shown that, a non-random driving force does not influence the evolution of the system’s joint entropy. For a random driving force however, the joint entropy increases almost monotonically with time, while exhibiting oscillatory behavior. The increase is a further proof of the decoherence mechanism in the system, for which we determine the duration and other characteristics.

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Authors and Affiliations

  1. Mesoscopic and Multilayer Structures Laboratory, Department of Physics, Faculty of Science, University of Dschang, P.O. Box 479, Dschang, Cameroon

    A. J. Fotue

  2. International Chair in Mathematical Physics and Applications (ICMPA-UNESCO Chair), University of Abomey-Calavi, P.O. Box 50, 072, Cotonou, Republic of Benin

    A. V. Wirngo, R. M. Keumo Tsiaze & M. N. Hounkonnou

  3. Laboratory of Mechanics, Materials and Structures, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon

    R. M. Keumo Tsiaze

Authors
  1. A. J. Fotue
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  2. A. V. Wirngo
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  3. R. M. Keumo Tsiaze
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  4. M. N. Hounkonnou
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Correspondence to A. J. Fotue.

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Fotue, A.J., Wirngo, A.V., Keumo Tsiaze, R.M. et al. Joint entropy and decoherence without dissipation in a driven harmonic oscillator. Eur. Phys. J. Plus 131, 326 (2016). https://doi.org/10.1140/epjp/i2016-16326-9

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  • DOI: https://doi.org/10.1140/epjp/i2016-16326-9

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