Publication:
Extracting Work Optimally with Imprecise Measurements

Loading...
Thumbnail Image
Full text at PDC
Publication Date
2020-12-23
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Multidisciplinary Digital Publishing Institute
Citations
Google Scholar
Research Projects
Organizational Units
Journal Issue
Abstract
Measurement and feedback allows for an external agent to extract work from a system in contact with a single thermal bath. The maximum amount of work that can be extracted in a single measurement and the corresponding feedback loop is given by the information that is acquired via the measurement, a result that manifests the close relation between information theory and stochastic thermodynamics. In this paper, we show how to reversibly confine a Brownian particle in an optical tweezer potential and then extract the corresponding increase of the free energy as work. By repeatedly tracking the position of the particle and modifying the potential accordingly, we can extract work optimally, even with a high degree of inaccuracy in the measurements.
Description
L.D. and J.M.R.P. acknowledge financial support from Ministerio de Ciencia, Innovación y Universidades grant number FIS2017-83709-R.
UCM subjects
Keywords
Citation
Collections