Publication:
Evolution processes of coupled thermal qubits

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dc.contributor.authorChatchawaltheerat T.
dc.contributor.authorKhemmani S.
dc.contributor.authorPoulter J.
dc.date.accessioned2021-04-05T03:02:25Z
dc.date.available2021-04-05T03:02:25Z
dc.date.issued2019
dc.date.issuedBE2562
dc.description.abstractWe investigate the quantum speed limit time (QSLT) of quantum evolution before thermal equilibrium of two coupled qubits each of which is coupled to a separate thermal bath at the same temperature within the Born-Markov approximation. The evolution process in one particular initial state can change between speed-up and speed-down two times before reaching equilibrium. We call this double cusp behaviour. This behaviour is an anomalous phenomenon in evolution processes in the weak-coupling Markovian regime. We study QSLT corresponding to all pure initial energy eigenstates and categorise them. In addition, we also display the conditions for double cusp behaviour in terms of temperature, qubit interaction and frequency. © 2019 Elsevier B.V.
dc.format.mimetypeapplication/pdf
dc.identifier.citationPhysics Letters, Section A: General, Atomic and Solid State Physics. Vol 383, No.31 (2019)
dc.identifier.doi10.1016/j.physleta.2019.125882
dc.identifier.issn3759601
dc.identifier.other2-s2.0-85070863237
dc.identifier.urihttps://hdl.handle.net/20.500.14740/5085
dc.rights.holderScopus
dc.subject.otherSpeed
dc.subject.otherBorn-Markov approximation
dc.subject.otherDouble cusp behaviour
dc.subject.otherMarkovian
dc.subject.otherSpeed limit
dc.subject.otherSpeed up
dc.subject.otherQubits
dc.titleEvolution processes of coupled thermal qubits
dc.typeArticle
dspace.entity.typePublication
swu.datasource.scopushttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85070863237&doi=10.1016%2fj.physleta.2019.125882&partnerID=40&md5=ef23fdc5b511fb5378f0f700b89d6e0b

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