Measurement-driven single temperature engine

Xuehao Ding, Juyeon Yi, Yong Woon Kim, and Peter Talkner

Phys. Rev. E 98, 042122 – Published 10 October 2018

Abstract

A four-stroke quantum engine which alternately interacts with a measurement apparatus and a single heat bath is discussed in detail with respect to the average work and heat as well as to the fluctuations of work and heat. The efficiency and the reliability of such an engine with a harmonic oscillator as working substance are analyzed under different conditions, such as different speeds of the work strokes, different temperatures of the heat bath, and various strengths of the energy supplying measurement. For imperfect thermalization strokes of finite duration also the power of the engine is analyzed. A comparison with a two-temperature Otto engine is provided in the particular case of adiabatic work and ideal thermalization strokes.

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Received 29 May 2018

DOI:https://doi.org/10.1103/PhysRevE.98.042122

Physics Subject Headings (PhySH)

Open quantum systems Quantum thermodynamics

Statistical Physics & Thermodynamics

Authors & Affiliations

Xuehao Ding^1,2, Juyeon Yi³, Yong Woon Kim⁴, and Peter Talkner⁵

¹School of Physics, Peking University, Beijing 100871, P.R. China
²Department of Applied Physics, Stanford University, 348 Via Pueblo Way, Stanford 94305, USA
³Department of Physics, Pusan National University, Busan 46241, Republic of Korea
⁴Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Deajeon 34141, Republic of Korea
⁵Institut für Physik, Universität Augsburg, Universitätsstraße 1, D-86135 Augsburg, Germany

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Vol. 98, Iss. 4 — October 2018

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