Kovacs memory effect with an optically levitated nanoparticle

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dc.contributor.author Militaru, Andrei
dc.contributor.author Lasanta Becerra, Antonio
dc.contributor.author Frimmer, Martin
dc.contributor.author López Bonilla, Luis Francisco
dc.contributor.author Novotny, Lukas
dc.contributor.author Rica, Raúl A.
dc.date.accessioned 2021-10-04T10:09:21Z
dc.date.available 2021-10-04T10:09:21Z
dc.date.issued 2021-09-24
dc.identifier.bibliographicCitation Militaru, A., Lasanta, A., Frimmer, M., Bonilla, L. L., Novotny, L. & Rica, R. A. (2021). Kovacs Memory Effect with an Optically Levitated Nanoparticle. Physical Review Letters, 127(13), 130603.
dc.identifier.issn 0031-9007
dc.identifier.uri http://hdl.handle.net/10016/33357
dc.description.abstract The understanding of the dynamics of nonequilibrium cooling and heating processes at the nanoscale is still an open problem. These processes can follow surprising relaxation paths due to, e.g., memory effects, which significantly alter the expected equilibration routes. The Kovacs effect can take place when a thermalization process is suddenly interrupted by a change of the bath temperature, leading to a nonmonotonic evolution of the energy of the system. Here, we demonstrate that the Kovacs effect can be observed in the thermalization of the center of mass motion of a levitated nanoparticle. The temperature is controlled during the experiment through an external source of white Gaussian noise that mimics an effective thermal bath at a temperature that can be changed faster than any relaxation time of the system. We describe our experiments in terms of the dynamics of a Brownian particle in a harmonic trap without any fitting parameter, suggesting that the Kovacs effect can appear in a large variety of systems.
dc.description.sponsorship This research has been supported by European Union’s Horizon 2020 Research and Innovation Programme under Grant No. 863132 (iQLev) and by the Swiss National Science Foundation through Grant No. 200021L-169319. A. L. acknowledges financial support by the FEDER/Ministerio de Ciencia, Innovación y Universidades—Agencia Estatal de Investigación, under Grants No. MTM2017-84446-C2-2-R and No. PID2020–116567GB-C22. L. L. B. acknowledges financial support by the FEDER/Ministerio de Ciencia, Innovación y Universidades—Agencia Estatal de Investigación, under Grants No. MTM2017-84446-C2-2-R and No. PID2020-112796RB-C22, the Madrid Government (Comunidad de Madrid-Spain) under the Multiannual Agreement with UC3M in the line of Excellence of University Professors (EPUC3M23), and in the context of the V PRICIT (Regional Programme of Research and Technological Innovation). R. A. R. acknowledges financial support from FEDER/Junta de Andalucía-Consejería de Economía y Conocimiento/Projects No. C-FQM-410-UGR18 and No. P18-FR-3583.
dc.format.extent 6
dc.language.iso eng
dc.publisher American Physical Society
dc.rights © 2021 American Physical Society.
dc.title Kovacs memory effect with an optically levitated nanoparticle
dc.type article
dc.subject.eciencia Matemáticas
dc.identifier.doi https://doi.org/10.1103/PhysRevLett.127.130603
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. MTM2017-84446-C2-2-R
dc.relation.projectID Gobierno de España. PID2020-116567GB-C22
dc.relation.projectID Comunidad de Madrid. EPUC3M23
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/863132/EU/IQLev
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 130603-1
dc.identifier.publicationissue 13
dc.identifier.publicationlastpage 130603-6
dc.identifier.publicationtitle Physical Review Letters
dc.identifier.publicationvolume 127
dc.identifier.uxxi AR/0000028408
dc.contributor.funder Comunidad de Madrid
dc.contributor.funder Ministerio de Ciencia e Innovación (España)
dc.contributor.funder European Commission
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