{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T16:48:51Z","timestamp":1780505331089,"version":"3.54.1"},"reference-count":31,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2019,8,7]],"date-time":"2019-08-07T00:00:00Z","timestamp":1565136000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000781","name":"European Research Council","doi-asserted-by":"publisher","award":["683107"],"award-info":[{"award-number":["683107"]}],"id":[{"id":"10.13039\/501100000781","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100010662","name":"H2020 Excellent Science","doi-asserted-by":"publisher","award":["766900"],"award-info":[{"award-number":["766900"]}],"id":[{"id":"10.13039\/100010662","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000288","name":"Royal Society","doi-asserted-by":"publisher","award":["RSWF\\R3\\183013"],"award-info":[{"award-number":["RSWF\\R3\\183013"]}],"id":[{"id":"10.13039\/501100000288","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000275","name":"Leverhulme Trust","doi-asserted-by":"publisher","award":["RGP-2018-266"],"award-info":[{"award-number":["RGP-2018-266"]}],"id":[{"id":"10.13039\/501100000275","id-type":"DOI","asserted-by":"publisher"}]},{"name":"SFI-DfE Investigator Programme","award":["15\/IA\/2864"],"award-info":[{"award-number":["15\/IA\/2864"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>Recently, the concept of daemonic ergotropy has been introduced to quantify the maximum energy that can be obtained from a quantum system through an ancilla-assisted work extraction protocol based on information gain via projective measurements [G. Francica et al., npj Quant. Inf. 3, 12 (2018)]. We prove that quantum correlations are not advantageous over classical correlations if projective measurements are considered. We go beyond the limitations of the original definition to include generalised measurements and provide an example in which this allows for a higher daemonic ergotropy. Moreover, we propose a see-saw algorithm to find a measurement that attains the maximum work extraction. Finally, we provide a multipartite generalisation of daemonic ergotropy that pinpoints the influence of multipartite quantum correlations, and study it for multipartite entangled and classical states.<\/jats:p>","DOI":"10.3390\/e21080771","type":"journal-article","created":{"date-parts":[[2019,8,7]],"date-time":"2019-08-07T10:56:38Z","timestamp":1565175398000},"page":"771","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Daemonic Ergotropy: Generalised Measurements and Multipartite Settings"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7731-7362","authenticated-orcid":false,"given":"Fabian","family":"Bernards","sequence":"first","affiliation":[{"name":"Naturwissenschaftlich-Technische Fakult\u00e4t, Universit\u00e4t Siegen, Walter-Flex-Stra\u00dfe 3, 57068 Siegen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthias","family":"Kleinmann","sequence":"additional","affiliation":[{"name":"Naturwissenschaftlich-Technische Fakult\u00e4t, Universit\u00e4t Siegen, Walter-Flex-Stra\u00dfe 3, 57068 Siegen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Otfried","family":"G\u00fchne","sequence":"additional","affiliation":[{"name":"Naturwissenschaftlich-Technische Fakult\u00e4t, Universit\u00e4t Siegen, Walter-Flex-Stra\u00dfe 3, 57068 Siegen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mauro","family":"Paternostro","sequence":"additional","affiliation":[{"name":"School of Mathematics and Physics, Queen\u2019s University, Belfast BT7 1NN, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,8,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"143001","DOI":"10.1088\/1751-8113\/49\/14\/143001","article-title":"The role of quantum information in thermodynamics\u2014A topical review","volume":"49","author":"Goold","year":"2016","journal-title":"J. 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