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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
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Cooling classical particles with a microcanonical Szilard engine.

Rahul Marathe1, J M R Parrondo

  • 1Departamento de Física Atómica, Molecular y Nuclear and GISC, Universidad Complutense de Madrid, 28040-Madrid, Spain. rahul@fis.ucm.es

Physical Review Letters
|September 28, 2010
PubMed
Summary
This summary is machine-generated.

This study demonstrates energy extraction via cyclic processes using a microcanonical initial state, eliminating the need for measurement, similar to the Szilard engine.

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Area of Science:

  • Thermodynamics
  • Statistical Mechanics
  • Quantum Information

Background:

  • Cyclic processes can extract energy from systems.
  • The Szilard engine is a thought experiment demonstrating this principle.
  • Measurement is often a key component in such engines.

Purpose of the Study:

  • To explore energy extraction in cyclic processes.
  • To present an explicit example using a microcanonical initial state.
  • To investigate protocols that do not require measurement.

Main Methods:

  • Preparation of a system in a microcanonical state.
  • Design of a cyclic process protocol.
  • Analysis of energy extraction without measurement.

Main Results:

  • An explicit example of energy extraction from a microcanonical state is provided.
  • The protocol successfully performs cyclic work extraction.
  • Measurement is shown to be unnecessary for this specific protocol.

Conclusions:

  • Energy can be extracted from systems in cyclic processes using microcanonical initial conditions.
  • This approach offers an alternative to measurement-dependent protocols.
  • The findings contribute to understanding the thermodynamics of information and cyclic processes.