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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.<\/jats:p>","DOI":"10.1088\/2058-9565\/aaf5b4","type":"journal-article","created":{"date-parts":[[2018,12,3]],"date-time":"2018-12-03T17:30:14Z","timestamp":1543858214000},"page":"025002","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":66,"title":["An out-of-equilibrium non-Markovian quantum heat engine"],"prefix":"10.1088","volume":"4","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1850-340X","authenticated-orcid":false,"given":"Marco","family":"Pezzutto","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8870-9134","authenticated-orcid":false,"given":"Mauro","family":"Paternostro","sequence":"additional","affiliation":[]},{"given":"Yasser","family":"Omar","sequence":"additional","affiliation":[]}],"member":"266","published-online":{"date-parts":[[2019,1,9]]},"reference":[{"key":"qstaaf5b4bib1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevE.75.050102","type":"journal-article","article-title":"Fluctuation theorems: Work is not an observable","volume":"75","author":"Talkner","year":"2007","journal-title":"Phys. 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