Experimental Observation of the Role of Mutual Information in the Nonequilibrium Dynamics of a Maxwell Demon

被引：225

作者：

Koski, J. V. ^{[1
]}

Maisi, V. F. ^{[1
,2
]}

Sagawa, T. ^{[3
]}

Pekola, J. P. ^{[1
]}

机构：

[1] Aalto Univ, Low Temp Lab OVLL, FI-00076 Aalto, Finland

[2] Ctr Metrol & Accreditat MIKES, Espoo 02151, Finland

[3] Univ Tokyo, Dept Basic Sci, Meguro Ku, Tokyo 1538902, Japan

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 03期

基金：

芬兰科学院;

关键词：

FREE-ENERGY DIFFERENCES; FLUCTUATION THEOREM; JARZYNSKI EQUALITY; ENTROPY PRODUCTION; STATISTICS;

D O I：

10.1103/PhysRevLett.113.030601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We validate experimentally a fluctuation relation known as generalized Jarzynski equality governing the work distribution in a feedback-controlled system. The feedback control is performed on a single electron box analogously to the original Szilard engine. In the generalized Jarzynski equality, mutual information is treated on an equal footing with the thermodynamic work. Our measurements provide the first evidence of the role of mutual information in the fluctuation theorem and thermodynamics of irreversible processes.

引用

页数：5

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