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dc.contributor.authorLevi, Elliott Kendrick
dc.contributor.authorIrish, E. K.
dc.contributor.authorLovett, Brendon William
dc.identifier.citationLevi , E K , Irish , E K & Lovett , B W 2016 , ' Coherent exciton dynamics in a dissipative environment maintained by an off-resonant vibrational mode ' , Physical Review. A, Atomic, molecular, and optical physics , vol. 93 , no. 4 , 042109 .
dc.identifier.otherPURE: 241964462
dc.identifier.otherPURE UUID: 041abdce-d083-49a6-a8ba-8ce83a478cb4
dc.identifier.otherBibtex: urn:d83005023d7b9251191961e5e6d44644
dc.identifier.otherScopus: 84964343800
dc.identifier.otherORCID: /0000-0001-5142-9585/work/47136533
dc.identifier.otherWOS: 000373971100001
dc.descriptionThis work was supported by the Leverhulme Trust (RPG-080) and the EPSRC (EP/G03673X/1).en
dc.description.abstractThe interplay between an open quantum system and its environment can lead to both coherent and incoherent behavior. We explore the extent to which strong coupling to a single bosonic mode can alter the coherence properties of a two-level system in a structured environment. This mode is treated exactly, with the rest of the environment comprising a Markovian bath of bosonic modes. The strength of the coupling between the two-level system and the single mode is varied for a variety of forms for the bath spectral density in order to assess whether the coherent dynamics of the two-level system are modified. We find a clear renormalization of the site population oscillation frequency that causes an altered interaction with the bath. This leads to enhanced or reduced coherent behavior of the two-level system, depending on the form of the spectral density function. We present an intuitive interpretation, based on an analytical model, to explain the behavior.
dc.relation.ispartofPhysical Review. A, Atomic, molecular, and optical physicsen
dc.rights©2016 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at:
dc.subjectQC Physicsen
dc.titleCoherent exciton dynamics in a dissipative environment maintained by an off-resonant vibrational modeen
dc.typeJournal articleen
dc.contributor.sponsorThe Leverhulme Trusten
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.description.statusPeer revieweden

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