Experimental observation of the role of mutual information in the nonequilibrium dynamics of a Maxwell demon

J.V. Koski, V.F. Maisi, T. Sagawa, J.P. Pekola

Research output: Contribution to journalArticleScientificpeer-review

102 Citations (Scopus)

Abstract

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.
Original languageEnglish
Article number030601
Number of pages5
JournalPhysical Review Letters
Volume113
Issue number3
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

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thermodynamics
irreversible processes
feedback control
boxes
engines
theorems
electrons

Keywords

  • thermodynamics

Cite this

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abstract = "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.",
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Experimental observation of the role of mutual information in the nonequilibrium dynamics of a Maxwell demon. / Koski, J.V.; Maisi, V.F.; Sagawa, T.; Pekola, J.P.

In: Physical Review Letters, Vol. 113, No. 3, 030601, 2014.

Research output: Contribution to journalArticleScientificpeer-review

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AB - 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.

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