Spin squeezing in internal bosonic Josephson junctions via enhanced shortcuts to adiabaticity

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dc.contributor.authorOdelli, Manuelen
dc.contributor.authorStojanović, Vladimir M.en
dc.contributor.authorRuschhaupt, Andreasen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderDeutsche Forschungsgemeinschaften
dc.date.accessioned2023-12-01T12:18:07Z
dc.date.available2023-12-01T12:18:07Z
dc.date.issued2023-11-17en
dc.description.abstractWe investigate a time-efficient and robust preparation of spin-squeezed states—a class of states of interest for quantum enhanced metrology—in internal bosonic Josephson junctions with a time-dependent nonlinear coupling strength between atoms in two different hyperfine states. We treat this state-preparation problem, which had previously been addressed using shortcuts to adiabaticity (STA), using the recently proposed analytical modification of this class of quantum control protocols that has become known as the enhanced STA (eSTA) method. We characterize the state-preparation process by evaluating the time dependence of the coherent spin-squeezing and number-squeezing parameters and the target-state fidelity. We show that the state-preparation times obtained using the eSTA method compare favorably to those found in previously proposed approaches. We also demonstrate that the increased robustness of the eSTA approach—compared to its STA counterpart—leads to additional advantages for potential experimental realizations of strongly spin-squeezed states in internal bosonic Josephson junctions.en
dc.description.sponsorshipDeutsche Forschungsgemeinschaft (DFG-SFB 1119 Grant No. 236615297)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid054038en
dc.identifier.citationOdelli, M., Stojanović, V. M. and Ruschhaupt, A. (2023) 'Spin squeezing in internal bosonic Josephson junctions via enhanced shortcuts to adiabaticity', Physical Review Applied, 20(5), 054038 (13pp). doi: 10.1103/physrevapplied.20.054038en
dc.identifier.doi10.1103/physrevapplied.20.054038en
dc.identifier.eissn2331-7019en
dc.identifier.endpage13en
dc.identifier.issued5en
dc.identifier.journaltitlePhysical Review Applieden
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/15288
dc.identifier.volume20en
dc.language.isoenen
dc.publisherAmerican Physical Society.en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Frontiers for the Future::Project/19/FFP/6951/IE/Shortcut-Enhanced Quantum Thermodynamics/en
dc.rights© 2023, American Physical Society. All rights reserved.en
dc.subjectSpin-squeezingen
dc.subjectNumber-squeezingen
dc.subjectEnhanced shortcuts to adiabaticityen
dc.subjecteSTAen
dc.subjectInternal bosonic Josephson junctionsen
dc.titleSpin squeezing in internal bosonic Josephson junctions via enhanced shortcuts to adiabaticityen
dc.typeArticle (peer-reviewed)en
oaire.citation.issue5en
oaire.citation.volume20en
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