Thermodynamics of continuous non-Markovian feedback control

Autor(en)

Maxime Debiossac, David Grass, Jose Joaquin Alonso, Eric Lutz, Nikolai Kiesel

Abstrakt

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.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universität Stuttgart

Journal

Nature Communications

Band

11

Anzahl der Seiten

6

ISSN

2041-1723

DOI

https://doi.org/10.1038/s41467-020-15148-5

Publikationsdatum

03-2020

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie, Allgemeine Chemie, Allgemeine Biochemie, Genetik und Molekularbiologie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/96a452b2-72f5-4e22-991e-8adcf8e1104d