Show simple item record

Files in this item

Thumbnail

Item metadata

dc.contributor.authorHiggins, Kieran D. B.
dc.contributor.authorLovett, Brendon William
dc.contributor.authorGauger, Erik M.
dc.date.accessioned2014-08-20T15:31:02Z
dc.date.available2014-08-20T15:31:02Z
dc.date.issued2013-10-07
dc.identifier.citationHiggins , K D B , Lovett , B W & Gauger , E M 2013 , ' Quantum thermometry using the ac Stark shift within the Rabi model ' , Physical Review. B, Condensed matter and materials physics , vol. 88 , no. 15 , 155409 . https://doi.org/10.1103/PhysRevB.88.155409en
dc.identifier.issn1098-0121
dc.identifier.otherPURE: 79638608
dc.identifier.otherPURE UUID: 0431462b-eda3-43c4-80b4-878efa139615
dc.identifier.otherWOS: 000325500600010
dc.identifier.otherScopus: 2-s2.0-84885221680
dc.identifier.otherORCID: /0000-0001-5142-9585/work/47136588
dc.identifier.urihttp://hdl.handle.net/10023/5200
dc.descriptionThis work was supported by the EPSRC, the National Research Foundation and Ministry of Education, Singapore, and the Royal Society.en
dc.description.abstractA quantum two-level system coupled to a harmonic oscillator represents a ubiquitous physical system. New experiments in circuit QED and nanoelectromechanical systems (NEMS) achieve unprecedented coupling strength at large detuning between qubit and oscillator, thus requiring a theoretical treatment beyond the Jaynes-Cummings model. Here we present a new method for describing the qubit dynamics in this regime, based on an oscillator correlation function expansion of a non-Markovian master equation in the polaron frame. Our technique yields a new numerical method as well as a succinct approximate expression for the qubit dynamics. These expressions are valid in the experimentally interesting regime of strong coupling at low temperature. We obtain a new expression for the ac Stark shift and show that this enables practical and precise qubit thermometry of an oscillator.
dc.format.extent6
dc.language.isoeng
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rights© 2013. American Physical Society.en
dc.subjectStateen
dc.titleQuantum thermometry using the ac Stark shift within the Rabi modelen
dc.typeJournal articleen
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.identifier.doihttps://doi.org/10.1103/PhysRevB.88.155409
dc.description.statusPeer revieweden


This item appears in the following Collection(s)

Show simple item record