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Classical and quantum limitations on energy consumption in computation

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Abstract

Fundamental limitations on the energy dissipated during one elementary logical operation are discussed. A model of a real physical device (parametric quantron) based on the Josephson effect in superconductors is used throughout the discussion. This device is shown to be physically reversible, and moreover it can serve as the clementary cell of a logically reversible computer, both these properties being necessary to achieve the fundamental limits of energy dissipation. These limits due to classical and quantum statistics are shown to lie well below the earlier estimates,k B T and ηϑ, respectively.

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  1. Department of Physics, Moscow State University, 117234, Moscow, U.S.S.R.

    K. K. Likharev

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  1. K. K. Likharev
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Likharev, K.K. Classical and quantum limitations on energy consumption in computation. Int J Theor Phys 21, 311–326 (1982). https://doi.org/10.1007/BF01857733

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