2018/06/30 by Marco Pezzutto, Mauro Paternostro, Yasser Omar
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Character (mathematics) #Dynamics (music) #Harmonic #Harmonic oscillator #Heat engine #Micro and Nano Robotics #Quantum #Quantum dynamics #Work (physics) #cond-mat.stat-mech #quant-ph #stochastic dynamics and bifurcation
paper · pdf · doi:10.1088/2058-9565/aaf5b4
published as Quantum Science and Technology 4, 025002 (2019) · Close to published version. Added Figure 8b
openalex created_date 2018/07/10 · openalex publication_date 2018/12/03 · arxiv created 2019/02/18 · arxiv updated 2019/02/19 · openalex updated_date 2026/08/05
Abstract We study the performance of a quantum Otto cycle using a harmonic work medium and undergoing collisional dynamics with finite-size reservoirs. We span the dynamical regimes of the work strokes from strongly non-adiabatic to quasi-static conditions, and address the effects that non-Markovianity of the open-system dynamics of the work medium can have on the efficiency of the thermal machine. While such efficiency never surpasses the classical upper bound valid for finite-time stochastic engines, the behaviour of the engine shows clear-cut effects induced by both the finiteness of the evolution time, and the memory-bearing character of the system-environment evolution.