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A Rapid Method for Modeling a Variable Cycle Engine
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Finite-time measurement-driven Otto cycle.

Youlin Wang1, Shihao Xia1, Xinqiao Lin1

  • 1Department of Physics, <a href="https://ror.org/00mcjh785">Xiamen University</a>, Xiamen 361005, People's Republic of China.

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|December 18, 2024
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Summary
This summary is machine-generated.

This study introduces a novel quantum Otto heat engine using invasive measurements instead of heat absorption. Optimizing measurement angles and timing enhances engine efficiency and performance.

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Area of Science:

  • Quantum thermodynamics
  • Quantum information science

Background:

  • Conventional quantum Otto heat engines rely on heat absorption.
  • Finite-time thermodynamics introduces operational constraints.

Purpose of the Study:

  • Propose a novel quantum Otto heat engine operating in finite time.
  • Investigate the impact of measurement procedures on engine performance.
  • Analyze the trade-off between power and efficiency.

Main Methods:

  • Replaced heat absorption with invasive measurement in a quantum Otto cycle.
  • Incorporated finite-time thermodynamic manipulation for each cycle step.
  • Studied the influence of measurement basis angles and time-dependent evolution parameters.

Main Results:

  • Demonstrated that invasive measurements can replace heat absorption.
  • Showcased the significant impact of measurement basis angles and evolution timings.
  • Identified specific parameter choices for enhanced efficiency and power.

Conclusions:

  • The proposed quantum Otto heat engine offers a new paradigm for quantum heat devices.
  • Finite-time operation and measurement strategies are crucial for optimizing quantum heat engines.
  • Careful parameter selection can lead to substantial improvements in performance.