Publication:
Large Quantum Delocalization of a Levitated Nanoparticle using Optimal Control: Applications for Force Sensing and Entangling via Weak Forces

dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.contributor.authorWeiss, T.
dc.contributor.authorRoda-Llordes, M.
dc.contributor.authorTorrontegui Muñoz, Erik
dc.contributor.authorAspelmeyer, M.
dc.contributor.authorRomero-Isart, O.
dc.contributor.funderComunidad de Madrides
dc.contributor.funderMinisterio de Ciencia e Innovación (España)es
dc.date.accessioned2021-07-20T09:27:16Z
dc.date.available2021-07-20T09:27:16Z
dc.date.issued2021-07-09
dc.description.abstractWe propose to optimally control the harmonic potential of a levitated nanoparticle to quantum delocalize its center-of-mass motional state to a length scale orders of magnitude larger than the quantum zero-point motion. Using a bang-bang control of the harmonic potential, including the possibility of inverting it, the initial ground-state-cooled levitated nanoparticle coherently expands to large scales and then contracts to the initial state in a time-optimal way. We show that this fast loop protocol can be used to enhance force sensing as well as to dramatically boost the entangling rate of two weakly interacting nanoparticles. We parameterize the performance of the protocol, and therefore the macroscopic quantum regime that could be explored, as a function of displacement and frequency noise in the nanoparticle’s center-of-mass motion. This noise analysis accounts for the sources of decoherence relevant to current experiments.en
dc.description.sponsorshipWe thank P. Feldmann, D. Giannandrea, C. GonzalezBallestero, N. Kiesel, and A. Serafini for helpful discussions. ORI and MA thank the hospitality of the Perimeter Institute in 2017, where we had the first discussions about this project. TW acknowledges financial support from the Alexander von Humboldt foundation. ET acknowledges financial support from Project PGC2018-094792-B-I00 (MCIU/AEI/FEDER,UE), CSIC Research Platform PTI-001, and CAM/FEDER Project No. S2018/TCS-4342 (QUITEMAD-CM).en
dc.format.extent6
dc.identifier.bibliographicCitationWeiss, T., Roda-Llordes, M., Torrontegui, E., Aspelmeyer, M. & Romero-Isart, O. (2021). Large Quantum Delocalization of a Levitated Nanoparticle Using Optimal Control: Applications for Force Sensing and Entangling via Weak Forces. Physical Review Letters, 127(2), 023601.en
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.127.023601
dc.identifier.issn0031-9007
dc.identifier.publicationfirstpage023601
dc.identifier.publicationissue2
dc.identifier.publicationtitlePhysical Review Lettersen
dc.identifier.publicationvolume127
dc.identifier.urihttps://hdl.handle.net/10016/33113
dc.identifier.uxxiAR/0000026542
dc.language.isoeng
dc.publisherAmerican Physical Societyen
dc.relation.projectIDComunidad de Madrid. S2018/TCS-4342es
dc.relation.projectIDGobierno de España. PGC2018-094792-B-I00es
dc.rights© 2021 American Physical Societyen
dc.rights.accessRightsopen accessen
dc.subject.ecienciaFísicaes
dc.subject.otherEntanglement productionen
dc.subject.otherOptomechanicsen
dc.subject.otherQuantum controlen
dc.subject.otherQuantum foundationsen
dc.subject.otherQuantum metrologyen
dc.subject.otherQuantum-to-classical transitionen
dc.subject.otherNanoparticlesen
dc.titleLarge Quantum Delocalization of a Levitated Nanoparticle using Optimal Control: Applications for Force Sensing and Entangling via Weak Forcesen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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