{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:22:12Z","timestamp":1772252532668,"version":"3.50.1"},"reference-count":62,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2018,10,7]],"date-time":"2018-10-07T00:00:00Z","timestamp":1538870400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>We consider a purely mechanical quantum cycle comprised of adiabatic and isoenergetic processes. In the latter, the system interacts with an energy bath keeping constant the expectation value of the Hamiltonian. In this work, we study the performance of the quantum cycle for a system described by the quantum Rabi model for the case of controlling the coupling strength parameter, the resonator frequency, and the two-level system frequency. For the cases of controlling either the coupling strength parameter or the resonator frequency, we find that it is possible to closely approach to maximal unit efficiency when the parameter is sufficiently increased in the first adiabatic stage. In addition, for the first two cases the maximal work extracted is obtained at parameter values corresponding to high efficiency, which constitutes an improvement over current proposals of this cycle.<\/jats:p>","DOI":"10.3390\/e20100767","type":"journal-article","created":{"date-parts":[[2018,10,8]],"date-time":"2018-10-08T10:44:53Z","timestamp":1538995493000},"page":"767","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Quantum Mechanical Engine for the Quantum Rabi Model"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8684-4209","authenticated-orcid":false,"given":"Gabriel","family":"Alvarado Barrios","sequence":"first","affiliation":[{"name":"Departamento de F\u00edsica, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, Santiago 9170124, Chile"},{"name":"Center for the Development of Nanoscience and Nanotechnology, Estaci\u00f3n Central, Santiago 9170124, Chile"}]},{"given":"Francisco J.","family":"Pe\u00f1a","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Universidad T\u00e9cnica Federico Santa Mar\u00eda Casilla 110V, Valpara\u00edso 2340000, Chile"}]},{"given":"Francisco","family":"Albarr\u00e1n-Arriagada","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, Santiago 9170124, Chile"},{"name":"Center for the Development of Nanoscience and Nanotechnology, Estaci\u00f3n Central, Santiago 9170124, Chile"}]},{"given":"Patricio","family":"Vargas","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Universidad T\u00e9cnica Federico Santa Mar\u00eda Casilla 110V, Valpara\u00edso 2340000, Chile"},{"name":"Center for the Development of Nanoscience and Nanotechnology, Estaci\u00f3n Central, Santiago 9170124, Chile"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7174-7879","authenticated-orcid":false,"given":"Juan Carlos","family":"Retamal","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, Santiago 9170124, Chile"},{"name":"Center for the Development of Nanoscience and Nanotechnology, Estaci\u00f3n Central, Santiago 9170124, Chile"}]}],"member":"1968","published-online":{"date-parts":[[2018,10,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"050602","DOI":"10.1103\/PhysRevLett.88.050602","article-title":"Quantum Afterburner: Improving the Efficiency of an Ideal Heat Engine","volume":"88","author":"Scully","year":"2002","journal-title":"Phys. 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