Decoherence of adiabatically steered quantum systems

Simple item page
dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorSolinas, P.
dc.contributor.authorMöttönen, M.
dc.contributor.authorSalmilehto, J.
dc.contributor.authorPekola, Jukka P.
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-05-26T09:01:07Z
dc.date.available2015-05-26T09:01:07Z
dc.date.issued2010
dc.description.abstractWe study the effect of Markovian environmental noise on the dynamics of a two-level quantum system which is steered adiabatically by an external driving field. We express the master equation taking consistently into account all the contributions to the lowest nonvanishing order in the coupling to the Markovian environment. We study the master equation numerically and analytically and we find that, in the adiabatic limit, a zero-temperature environment does not affect the ground-state evolution. As a physical application, we discuss extensively how the environment affects Cooper-pair pumping. The adiabatic ground-state pumping appears to be robust against environmental noise. In fact, the relaxation due to the environment is required to avoid the accumulation of small errors from each pumping cycle. We show that neglecting the nonsecular terms in the master equation leads to unphysical results, such as charge nonconservation. We discuss also a possible way to control the environmental noise in a realistic physical setup and its influence on the pumping process.en
dc.description.versionPeer revieweden
dc.format.extent134517/1-12
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSolinas, P. & Möttönen, M. & Salmilehto, J. & Pekola, Jukka. 2010. Decoherence of adiabatically steered quantum systems. Physical Review B. Volume 82, Issue 13. 134517/1-12. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.82.134517.en
dc.identifier.doi10.1103/physrevb.82.134517
dc.identifier.issn1098-0121 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/16221
dc.identifier.urnURN:NBN:fi:aalto-201505262883
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseriesVolume 82, Issue 13
dc.rights© 2010 American Physical Society (APS). http://www.aps.org/en
dc.rights.holderAmerican Physical Society (APS)
dc.subject.keywordMarkovian environmenten
dc.subject.keywordnoiseen
dc.subject.keywordquantum systemsen
dc.subject.keywordexternal driving fieldsen
dc.subject.keywordCooper-pair pumpingen
dc.subject.otherPhysicsen
dc.titleDecoherence of adiabatically steered quantum systemsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
A1_solinas_p_2010.pdf
Size:
474.06 KB
Format:
Adobe Portable Document Format
Download
Collections
[article] Perustieteiden korkeakoulu / SCI