Designing optimal discrete-feedback thermodynamic engines

Details Designing optimal discrete-feedback thermodynamic engines Designing optimal discrete-feedback thermodynamic engines

2011-10-31

arxiv.org/abs/1110.6808v1

New J. Phys. 13, 123019 (2011)

Physics

Condensed Matter

Statistical Mechanics

15 pages, 5 figures, submitted to New J. Phys

Scientific paper

Feedback can be utilized to convert information into useful work, making it an effective tool for increasing the performance of thermodynamic engines. Using feedback reversibility as a guiding principle, we devise a method for designing optimal feedback protocols for thermodynamic engines that extract all the information gained during feedback as work. Our method is based on the observation that in a feedback-reversible process the measurement and the time-reversal of the ensuing protocol both prepare the system in the same probabilistic state. We illustrate the utility of our method with two examples of the multi-particle Szilard engine.

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