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Paneru, Govind
첨단연성물질 연구단
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Reaching and violating thermodynamic uncertainty bounds in information engines

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Title
Reaching and violating thermodynamic uncertainty bounds in information engines
Author(s)
Paneru, Govind; Dutta, Sandipan; Tlusty, Tsvi; Pak, Hyuk Kyu
Publication Date
2020-09
Journal
PHYSICAL REVIEW E, v.102, no.3, pp.1 - 6
Publisher
AMER PHYSICAL SOC
Abstract
Thermodynamic uncertainty relations (TURs) set fundamental bounds on the fluctuation and dissipation of stochastic systems. Here, we examine these bounds, in experiment and theory, by exploring the entire phase space of a cyclic information engine operating in a nonequilibrium steady state. Close to its maximal efficiency, we find that the engine violates the original TUR. This experimental demonstration of TUR violation agrees with recently proposed softer bounds: The engine satisfies two generalized TUR bounds derived from the detailed fluctuation theorem with feedback control and another bound linking fluctuation and dissipation to mutual information and Renyi divergence. We examine how the interplay of work fluctuation and dissipation shapes the information conversion efficiency of the engine, and find that dissipation is minimal at a finite noise level, where the original TUR is violated
URI
https://pr.ibs.re.kr/handle/8788114/8997
DOI
10.1103/PhysRevE.102.032126
ISSN
1539-3755
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > 1. Journal Papers (저널논문)
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