Thermodynamics of continuous non-Markovian feedback control.

Journal Article (Journal Article)

Feedback control mechanisms are ubiquitous in science and technology, and play an essential role in regulating physical, biological and engineering systems. The standard second law of thermodynamics does not hold in the presence of measurement and feedback. Most studies so far have extended the second law for discrete, Markovian feedback protocols; however, non-Markovian feedback is omnipresent in processes where the control signal is applied with a non-negligible delay. Here, we experimentally investigate the thermodynamics of continuous, time-delayed feedback control using the motion of an optically levitated, underdamped microparticle. We test the validity of a generalized second law which bounds the energy extracted from the system, and study the breakdown of feedback cooling for very large time delays.

Full Text

Duke Authors

Cited Authors

  • Debiossac, M; Grass, D; Alonso, JJ; Lutz, E; Kiesel, N

Published Date

  • March 13, 2020

Published In

Volume / Issue

  • 11 / 1

Start / End Page

  • 1360 -

PubMed ID

  • 32170062

Pubmed Central ID

  • PMC7070085

Electronic International Standard Serial Number (EISSN)

  • 2041-1723

International Standard Serial Number (ISSN)

  • 2041-1723

Digital Object Identifier (DOI)

  • 10.1038/s41467-020-15148-5


  • eng