Role of measurement-feedback separation in autonomous Maxwell's demons
Naoto Shiraishi, Sosuke Ito, Kyogo Kawaguchi, Takahiro Sagawa
TL;DR
This paper presents an autonomous information heat engine with separated measurement and feedback, clarifying their roles in fluctuation theorems and bridging different Maxwell's demon models.
Contribution
It introduces a new autonomous model with separated measurement and feedback, analyzing their impact on fluctuation theorems and connecting various Maxwell's demon frameworks.
Findings
Separated measurement and feedback influence fluctuation theorems.
The model bridges Szilard-engine and autonomous demon systems.
Clarifies the thermodynamic role of measurement-feedback separation.
Abstract
We introduce an information heat engine that is autonomous (i.e., without any time-dependent parameter) but has separated measurement and feedback processes. This model serves as a bridge between the other types of information heat engines inspired by Maxwell's demon; from the original Szilard-engine type systems to the autonomous demonic setups. By analyzing our model on the basis of a general framework introduced in our previous paper [N. Shiraishi and T. Sagawa, Phys. Rev. E {\bf 91}, 012130 (2015).], we clarify the role of the separation of measurement and feedback in the integral fluctuation theorems.
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