Many-Body Dephasing in a Trapped-Ion Quantum Simulator

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dc.citation.articleNumber120605en_US
dc.citation.issueNumber12en_US
dc.citation.journalTitlePhysical Review Lettersen_US
dc.citation.volumeNumber125en_US
dc.contributor.authorKaplan, Harvey B.en_US
dc.contributor.authorGuo, Lingzhenen_US
dc.contributor.authorTan, Wen Linen_US
dc.contributor.authorDe, Arinjoyen_US
dc.contributor.authorMarquardt, Florianen_US
dc.contributor.authorPagano, Guidoen_US
dc.contributor.authorMonroe, Christopheren_US
dc.date.accessioned2020-11-06T02:02:49Zen_US
dc.date.available2020-11-06T02:02:49Zen_US
dc.date.issued2020en_US
dc.description.abstractHow a closed interacting quantum many-body system relaxes and dephases as a function of time is a fundamental question in thermodynamic and statistical physics. In this Letter, we analyze and observe the persistent temporal fluctuations after a quantum quench of a tunable long-range interacting transverse-field Ising Hamiltonian realized with a trapped-ion quantum simulator. We measure the temporal fluctuations in the average magnetization of a finite-size system of spin-1/2 particles. We experiment in a regime where the properties of the system are closely related to the integrable Hamiltonian with global spin-spin coupling, which enables analytical predictions for the long-time nonintegrable dynamics. The analytical expression for the temporal fluctuations predicts the exponential suppression of temporal fluctuations with increasing system size. Our measurement data is consistent with our theory predicting the regime of many-body dephasing.en_US
dc.identifier.citationKaplan, Harvey B., Guo, Lingzhen, Tan, Wen Lin, et al.. "Many-Body Dephasing in a Trapped-Ion Quantum Simulator." <i>Physical Review Letters,</i> 125, no. 12 (2020) American Physical Society: https://doi.org/10.1103/PhysRevLett.125.120605.en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.125.120605en_US
dc.identifier.urihttps://hdl.handle.net/1911/109523en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsPublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleMany-Body Dephasing in a Trapped-Ion Quantum Simulatoren_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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