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

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

2008-09-24

arxiv.org/abs/0809.4098v3

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

Physics

Quantum Physics

Scientific paper

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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