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

被引：279

作者：

Sagawa, Takahiro ^{[1
]}

Ueda, Masahito ^{[1
,2
]}

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1138654, Japan

[2] JST, ERATO Macroscop Quantum Control Project, Bunkyo Ku, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 25期

基金：

芬兰科学院;

关键词：

FLUCTUATION THEOREM; QUANTUM; EQUALITY; WORK;

D O I：

10.1103/PhysRevLett.102.250602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The fundamental lower bounds on the thermodynamic energy cost of measurement and information erasure are determined. The lower bound on the erasure validates Landauer's principle for a symmetric memory; for other cases, the bound indicates the breakdown of the principle. Our results constitute the second law of "information thermodynamics," in which information content and thermodynamic variables are treated on an equal footing.

引用

页数：4

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