Minimal Energy Cost for Thermodynamic Information Processing: Measurement and Information Erasure

2008/09/30 by Takahiro Sagawa, Masahito Ueda · 4 citations
Physics and Astronomy · #quant-ph #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevlett.102.250602

published as Phys. Rev. Lett. 102, 250602 (2009).

arxiv created 2009/05/30 · arxiv updated 2015/05/12

Abstract

The fundamental lower bounds of the thermodynamic energy cost (work) needed for the measurement and the erasure of information are found. The lower bound for the erasure vindicates the "Landauer's principle" for a special case, but otherwise implies its breakdown, indicating that no unique relationship exists between logical reversibility and physical one. Our results constitute the second law of "information thermodynamics", in which the information content and thermodynamic variables are treated on an equal footing.

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• The Locality Gap: A Thermodynamic Law for Objective Facts
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• Performance of a Brownian information engine through potential profiling: Optimum output requisites, Heating-to-Refrigeration transition and their Re-entrance