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Fluctuation theorem in the quantum Otto engine with long-range interaction.

Peng-Yu Jin1, Wen-Yu Tan1, Zheng-Hao Wang1

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Researchers explored quantum heat engine fluctuations using long-range interactions. Manipulating these interactions can improve control over quantum Otto engine work and heat fluctuations in single strokes and cycles.

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Area of Science:

  • Quantum Thermodynamics
  • Statistical Mechanics
  • Condensed Matter Physics

Background:

  • The quantum Otto engine is a key area of research in quantum thermodynamics.
  • Understanding and controlling fluctuations in quantum heat engines is crucial for their practical application.
  • Long-range interactions in many-body systems offer a potential avenue for enhanced control.

Purpose of the Study:

  • To investigate the fluctuation theorems for work and heat in a quantum Otto engine.
  • To explore the role of many-body systems with long-range interactions in controlling quantum heat engines.
  • To establish connections between work and heat fluctuations in single strokes and cycles.

Main Methods:

  • Utilized the two-point measurement technique and its generalizations.
  • Analyzed fluctuations in both single-stroke and cyclic processes.
  • Employed numerical simulations to study the impact of long-range interactions.

Main Results:

  • Established a connection between cycle work fluctuations and single-stroke work fluctuations.
  • Demonstrated that heat fluctuations in single strokes and cycles are linked to single-stroke work fluctuations.
  • Showed that long-range interactions can be manipulated to improve fluctuation control.

Conclusions:

  • The study provides a theoretical framework for understanding work and heat fluctuations in quantum heat engines.
  • Long-range interactions present a tunable parameter for enhancing the performance and control of quantum Otto engines.
  • This research contributes to the development of more robust and controllable quantum thermodynamic devices.