title: Experimental observation of the role of mutual information in the nonequilibrium dynamics of a Maxwell demon.
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.
authors.affiliation: Low Temperature Laboratory (OVLL), Aalto University, POB 13500, FI-00076 Aalto, Finland.
authors.forename: J V
authors.initials: JV
authors.lastname: Koski
authors.affiliation: Low Temperature Laboratory (OVLL), Aalto University, POB 13500, FI-00076 Aalto, Finland and Centre for Metrology and Accreditation (MIKES), P.O. Box 9, 02151 Espoo, Finland.
authors.forename: V F
authors.initials: VF
authors.lastname: Maisi
authors.affiliation: Department of Basic Science, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Sagawa
authors.affiliation: Low Temperature Laboratory (OVLL), Aalto University, POB 13500, FI-00076 Aalto, Finland.
authors.forename: J P
authors.initials: JP
authors.lastname: Pekola