An out-of-equilibrium non-Markovian quantum heat engine

Marco Pezzutto, Mauro Paternostro, Yasser Omar

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


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.

Original languageEnglish
Article number025002
Number of pages14
JournalQuantum Science and Technology
Issue number2
Publication statusPublished - 09 Jan 2019


  • active resonator reset
  • Circuit quantum electrodynamics
  • dissipation engineering
  • photon kerr effect
  • quantum error correction
  • self-trapping

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science (miscellaneous)
  • Physics and Astronomy (miscellaneous)
  • Electrical and Electronic Engineering


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