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Correlation-Picture Approach to Open-Quantum-System Dynamics

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Alipour, S.
dc.contributor.author Rezakhani, A. T.
dc.contributor.author Babu, A. P.
dc.contributor.author Mølmer, K.
dc.contributor.author Möttönen, M.
dc.contributor.author Ala-Nissila, T.
dc.date.accessioned 2020-11-30T08:15:29Z
dc.date.available 2020-11-30T08:15:29Z
dc.date.issued 2020-11-03
dc.identifier.citation Alipour , S , Rezakhani , A T , Babu , A P , Mølmer , K , Möttönen , M & Ala-Nissila , T 2020 , ' Correlation-Picture Approach to Open-Quantum-System Dynamics ' , Physical Review X , vol. 10 , no. 4 , 041024 . https://doi.org/10.1103/PhysRevX.10.041024 en
dc.identifier.issn 2160-3308
dc.identifier.other PURE UUID: 6c11ff5e-575b-4c64-af43-3483fad39902
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/correlationpicture-approach-to-openquantumsystem-dynamics(6c11ff5e-575b-4c64-af43-3483fad39902).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85095614926&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/53152511/Alipour_Correlation_Picture.PhysRevX.10.041024.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/61725
dc.description.abstract We introduce a dynamical picture, referred to as correlation picture, which connects a correlated bipartite state to its uncorrelated counterpart. This picture allows us to derive an exact dynamical equation for a general open-system dynamics with system-environment correlations included. This exact dynamics is in the form of a Lindblad-like equation even in the presence of initial system-environment correlations. For explicit calculations, we also develop a weak-correlation expansion that allows us to introduce systematic perturbative approximations. This expansion provides approximate master equations that can feature advantages over existing weak-coupling techniques. As a special case, we derive a Markovian master equation, which is different from existing approaches. We compare our equations with corresponding standard weak-coupling equations using two examples, for which our correlation-picture formalism is more accurate, or at least as accurate as the weak-coupling equations. en
dc.format.extent 11
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher American Physical Society
dc.relation.ispartofseries Physical Review X en
dc.relation.ispartofseries Volume 10, issue 4 en
dc.rights openAccess en
dc.title Correlation-Picture Approach to Open-Quantum-System Dynamics en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.contributor.department Sharif University of Technology
dc.contributor.department Centre of Excellence in Quantum Technology, QTF
dc.contributor.department Aarhus University
dc.identifier.urn URN:NBN:fi:aalto-2020113020570
dc.identifier.doi 10.1103/PhysRevX.10.041024
dc.type.version publishedVersion

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