Lossless Brownian Information Engine.

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Physical review letters, ISSN: 1079-7114, Vol: 120, Issue: 2, Page: 020601

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http://arxiv.org/abs/1802.01868; http://scholarworks.unist.ac.kr/handle/201301/23221
Paneru, Govind; Lee, Dong Yun; Tlusty, Tsvi; Pak, Hyuk Kyu
American Physical Society (APS); AMER PHYSICAL SOC
Physics and Astronomy; Condensed Matter - Statistical Mechanics
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article description
We report on a lossless information engine that converts nearly all available information from an error-free feedback protocol into mechanical work. Combining high-precision detection at a resolution of 1 nm with ultrafast feedback control, the engine is tuned to extract the maximum work from information on the position of a Brownian particle. We show that the work produced by the engine achieves a bound set by a generalized second law of thermodynamics, demonstrating for the first time the sharpness of this bound. We validate a generalized Jarzynski equality for error-free feedback-controlled information engines.