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Quantum Maxwell's demon assisted by non-Markovian effects.

Kasper Poulsen1, Marco Majland1, Seth Lloyd2

  • 1Department of Physics and Astronomy, Aarhus University, Ny munkegade 120, 8000 Aarhus C, Denmark.

Physical Review. E
|May 20, 2022
PubMed
Summary

Researchers explored quantum Maxwell

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Area of Science:

  • Quantum Thermodynamics
  • Quantum Information Science
  • Condensed Matter Physics

Background:

  • Maxwell's demon illustrates information control essential for quantum devices.
  • Traditional implementations are limited to Markovian baths.
  • Non-Markovian effects offer potential for enhanced performance.

Purpose of the Study:

  • Investigate the role of non-Markovian effects in assisting quantum Maxwell demons.
  • Explore performance optimization through timing in non-Markovian regimes.
  • Demonstrate boosting information transfer rates using non-Markovian dynamics.

Main Methods:

  • Utilized a superconducting circuit platform.
  • Implemented a demon-controlled qutrit interface connecting two baths.
  • Analyzed excitation transfer based on entropy reduction.

Main Results:

  • Largest entropy reduction observed in a non-Markovian regime.
  • Non-Markovian effects enable performance optimization via timing.
  • Demonstrated enhanced information transfer rates.

Conclusions:

  • Non-Markovian effects can significantly benefit quantum Maxwell demons.
  • Exploiting non-Markovianity is key to optimizing quantum information processing.
  • This work paves the way for advanced quantum device design.