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dc.contributor.authorLacroix, Thibaut
dc.contributor.authorDunnett, Angus
dc.contributor.authorGribben, Dominic
dc.contributor.authorLovett, Brendon W.
dc.contributor.authorChin, Alex
dc.date.accessioned2022-01-17T16:30:14Z
dc.date.available2022-01-17T16:30:14Z
dc.date.issued2021-11-04
dc.identifier.citationLacroix , T , Dunnett , A , Gribben , D , Lovett , B W & Chin , A 2021 , ' Unveiling non-Markovian spacetime signaling in open quantum systems with long-range tensor network dynamics ' , Physical Review A , vol. 104 , no. 5 , 052204 . https://doi.org/10.1103/PhysRevA.104.052204en
dc.identifier.issn2469-9934
dc.identifier.otherPURE: 277194347
dc.identifier.otherPURE UUID: 9e706cd6-933b-483b-9418-741373ea79ff
dc.identifier.otherRIS: urn:31FB9865EB73FB0FAAC6985477C0AE07
dc.identifier.otherScopus: 85119057188
dc.identifier.otherORCID: /0000-0001-5142-9585/work/105318449
dc.identifier.otherORCID: /0000-0003-0649-1552/work/105318633
dc.identifier.otherWOS: 000717430000002
dc.identifier.urihttps://hdl.handle.net/10023/24684
dc.descriptionFunding: T.L., A.C., and B.W.L. thank the Defence Science and Technology Laboratory and Direction Générale de l'Armement for support through the Anglo-French Ph.D. scheme. A.D. acknowledges support from the École Doctorale 564 Physique en Île-de-France. D.G. acknowledges studentship funding from EPSRC (Grant No. EP/L015110/1). B.W.L. acknowledges support from EPSRC Grant No. EP/T014032/1 T.L. acknowledges to be part of the École Doctorale 564 Physique en Île-de-France and the Centre for Doctoral Training in Quantum Materials.en
dc.description.abstractNanoscale devices, either biological or artificial, operate in a regime where the usual assumptions of a structureless Markovian bath do not hold. Being able to predict and study the dynamics of such systems is crucial and is usually done by tracing out the bath degrees of freedom, which implies losing information about the environment. To go beyond these approaches we use a numerically exact method relying on a matrix product state representation of the quantum state of a system and its environment to keep track of the bath explicitly. This method is applied to a specific example of interaction that depends on the spatial structure of a system made of two sites. The result is that we predict a non-Markovian dynamics where long-range couplings induce correlations into the environment. The environment dynamics can be naturally extracted from our method and shine a light on long-time feedback effects that are responsible for the observed non-Markovian recurrences in the eigenpopulations of the system.
dc.format.extent14
dc.language.isoeng
dc.relation.ispartofPhysical Review Aen
dc.rightsCopyright © 2021 American Physical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1103/PhysRevA.104.052204.en
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.subjectT-NDASen
dc.subjectMCCen
dc.subject.lccQCen
dc.subject.lccTKen
dc.titleUnveiling non-Markovian spacetime signaling in open quantum systems with long-range tensor network dynamicsen
dc.typeJournal articleen
dc.contributor.sponsorEPSRCen
dc.contributor.sponsorEPSRCen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Centre for Designer Quantum Materialsen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.identifier.doihttps://doi.org/10.1103/PhysRevA.104.052204
dc.description.statusPeer revieweden
dc.identifier.urlhttps://arxiv.org/abs/2107.11217en
dc.identifier.grantnumberEP/L015110/1en
dc.identifier.grantnumberEP/T014032/1en


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