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Response to "Comment on 'Zero and negative energy dissipation at information-theoretic erasure'"
Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA..
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA..
NICT, CiNet, 1-4 Yamadaoka, Suita, Osaka 5650871, Japan.;Osaka Univ, 1-4 Yamadaoka, Suita, Osaka 5650871, Japan..
2016 (English)In: Journal of Computational Electronics, ISSN 1569-8025, E-ISSN 1572-8137, Vol. 15, no 1, 343-346 p.Article in journal, Editorial material (Other academic) PublishedText
Abstract [en]

We prove that statistical information-theoretic quantities, such as information entropy, cannot generally be interrelated with the lower limit of energy dissipation during information erasure. We also point out that, in deterministic and error-free computers, the information entropy of memories does not change during erasure because its value is always zero. On the other hand, for information-theoretic erasure-i.e., "thermalization"/randomization of the memory-the originally zero information entropy (with deterministic data in the memory) changes after erasure to its maximum value, 1 bit/memory bit, while the energy dissipation is still positive, even at parameters for which the thermodynamic entropy within the memory cell does not change. Information entropy does not convert to thermodynamic entropy and to the related energy dissipation; they are quantities of different physical nature. Possible specific observations (if any) indicating convertibility are at most fortuitous and due to the disregard of additional processes that are present.

Place, publisher, year, edition, pages
2016. Vol. 15, no 1, 343-346 p.
Keyword [en]
Information, Erasure, Switching, Energy dissipation, Non-validity of Landauer's theorem
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:uu:diva-301728DOI: 10.1007/s10825-015-0788-8ISI: 000371402300040OAI: oai:DiVA.org:uu-301728DiVA: diva2:955260
Available from: 2016-08-25 Created: 2016-08-24 Last updated: 2016-08-25Bibliographically approved

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Granqvist, Claes-Göran
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