Optimal Time-Entropy Bounds and Speed Limits for Brownian Thermal Shortcuts

Luís Barbosa Pires, Rémi Goerlich, Arthur Luna da Fonseca, Maxime Debiossac, Paul Antoine Hervieux, Giovanni Manfredi (Corresponding author), Cyriaque Genet (Corresponding author)

Publications: Contribution to journalArticlePeer Reviewed


By controlling the variance of the radiation pressure exerted on an optically trapped microsphere in real time, we engineer temperature protocols that shortcut thermal relaxation when transferring the microsphere from one thermal equilibrium state to another. We identify the entropic footprint of such accelerated transfers and derive optimal temperature protocols that either minimize the production of entropy for a given transfer duration or accelerate the transfer for a given entropic cost as much as possible. Optimizing the trade-off yields time-entropy bounds that put speed limits on thermalization schemes. We further show how optimization expands the possibilities for accelerating Brownian thermalization down to its fundamental limits. Our approach paves the way for the design of optimized, finite-time thermodynamics for Brownian engines. It also offers a platform for investigating fundamental connections between information geometry and finite-time processes.
Original languageEnglish
Article number097101
Number of pages7
JournalPhysical Review Letters
Issue number9
Publication statusPublished - 1 Sep 2023

Austrian Fields of Science 2012

  • 103029 Statistical physics
  • 103015 Condensed matter


Dive into the research topics of 'Optimal Time-Entropy Bounds and Speed Limits for Brownian Thermal Shortcuts'. Together they form a unique fingerprint.

Cite this