4.8 Article

Taming the Time Evolution in Overdamped Systems: Shortcuts Elaborated from Fast-Forward and Time-Reversed Protocols

Journal

PHYSICAL REVIEW LETTERS
Volume 127, Issue 19, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.127.190605

Keywords

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Funding

  1. Agence Nationale de la Recherche [ANR-18-CE30-0013]
  2. FEDER/Ministerio de Ciencia e Innovacion-Agencia Estatal de Investigacion (Spain) [PGC2018-093998-B-I00]
  3. Junta de Andalucia
  4. European Social Fund through the program PAIDI-DOCTOR

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This study uses reverse engineering to apply an external potential to a Brownian system, altering the dynamics and arrow of time, and accurately connecting two arbitrary states. The research provides a systematic approach to construct a physically feasible driving force for the transformation between different states.
Using a reverse-engineering approach on the time-distorted solution in a reference potential, we work out the external driving potential to be applied to a Brownian system in order to slow or accelerate the dynamics, or even to invert the arrow of time. By welding a direct and time-reversed evolution toward a well chosen common intermediate state, we analytically derive a smooth protocol to connect two arbitrary states in an arbitrarily short amount of time. Not only does the reverse-engineering approach proposed in this Letter contain the current-rather limited-catalog of explicit protocols, but it also provides a systematic strategy to build the connection between arbitrary states with a physically admissible driving. Optimization and further generalizations are also discussed.

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