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Random unitary evolution model of quantum Darwinism with pure decoherence

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Abstract

We study the behavior of Quantum Darwinism [W.H. Zurek, Nat. Phys. 5, 181 (2009)] within the iterative, random unitary operations qubit-model of pure decoherence [J. Novotný, G. Alber, I. Jex, New J. Phys. 13, 053052 (2011)]. We conclude that Quantum Darwinism, which describes the quantum mechanical evolution of an open system S from the point of view of its environment E, is not a generic phenomenon, but depends on the specific form of input states and on the type of S-E-interactions. Furthermore, we show that within the random unitary model the concept of Quantum Darwinism enables one to explicitly construct and specify artificial input states of environment E that allow to store information about an open system S of interest with maximal efficiency.

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Authors and Affiliations

  1. Institut für Angewandte Physik, Technische Universität Darmstadt, 64289, Darmstadt, Germany

    Nenad Balanesković

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  1. Nenad Balanesković
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Correspondence to Nenad Balanesković.

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Balanesković, N. Random unitary evolution model of quantum Darwinism with pure decoherence. Eur. Phys. J. D 69, 232 (2015). https://doi.org/10.1140/epjd/e2015-60319-9

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  • DOI: https://doi.org/10.1140/epjd/e2015-60319-9

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