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  • Letter

Finite-time measurement-driven Otto cycle

Youlin Wang*, Shihao Xia*, Xinqiao Lin, Ousi Pan, Jincan Chen, and Shanhe Su†

  • *These authors contributed equally to this work.
  • †Contact author: sushanhe@xmu.edu.cn

Phys. Rev. E 110, L052102 – Published 7 November, 2024

DOI: https://doi.org/10.1103/PhysRevE.110.L052102

Abstract

A novel quantum Otto heat engine that operates within a finite-time framework by incorporating measurement procedures is proposed. Departing from conventional quantum Otto heat engines, our model replaces the heat absorption process from a high-temperature source with invasive measurement. Moreover, we consider finite-time thermodynamic manipulation in each step. Our model focuses on exploring the effects of the angles of the measurement basis on the Bloch sphere and the timings of time-dependent evolutions on thermodynamic properties, with a specific emphasis on the trade-off between the power output and the efficiency. Our findings demonstrate that by carefully selecting specific parameters, the efficiency and overall performance of this heat engine can be significantly enhanced.

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