Many-Body Dephasing in a Trapped-Ion Quantum Simulator

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dc.citation.articleNumber120605
dc.citation.issueNumber12
dc.citation.journalTitlePhysical Review Letters
dc.citation.volumeNumber125
dc.contributor.authorKaplan, Harvey B.
dc.contributor.authorGuo, Lingzhen
dc.contributor.authorTan, Wen Lin
dc.contributor.authorDe, Arinjoy
dc.contributor.authorMarquardt, Florian
dc.contributor.authorPagano, Guido
dc.contributor.authorMonroe, Christopher
dc.date.accessioned2020-11-06T02:02:49Z
dc.date.available2020-11-06T02:02:49Z
dc.date.issued2020
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.
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.
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.125.120605
dc.identifier.urihttps://hdl.handle.net/1911/109523
dc.language.isoeng
dc.publisherAmerican Physical Society
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.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleMany-Body Dephasing in a Trapped-Ion Quantum Simulator
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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