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dc.contributor.authorHiggins, Kieran
dc.contributor.authorLovett, Brendon William
dc.contributor.authorGauger, Erik
dc.date.accessioned2017-10-17T14:30:13Z
dc.date.available2017-10-17T14:30:13Z
dc.date.issued2017-09-28
dc.identifier.citationHiggins , K , Lovett , B W & Gauger , E 2017 , ' Quantum-enhanced capture of photons using optical ratchet states ' , Journal of Physical Chemistry C , vol. 121 , no. 38 , pp. 20714–20719 . https://doi.org/10.1021/acs.jpcc.7b07138en
dc.identifier.issn1932-7447
dc.identifier.otherPURE: 251117881
dc.identifier.otherPURE UUID: 6ed7993f-8df4-464d-a42e-daea79ef1f69
dc.identifier.otherScopus: 85030450603
dc.identifier.otherORCID: /0000-0001-5142-9585/work/47136562
dc.identifier.otherWOS: 000412150500018
dc.identifier.urihttp://hdl.handle.net/10023/11867
dc.descriptionThis work was supported by the EPSRC and the Leverhulme Trust. BWL thanks the Royal Society for a University Research Fellowship. EMG acknowledges support from the Royal Society of Edinburgh and the Scottish Government.en
dc.description.abstractNatural and artificial light harvesting systems often operate in a regime where the flux of photons is relatively low. Besides absorbing as many photons as possible, it is paramount to prevent excitons from annihilation via photon re-emission until they have undergone an irreversible energy conversion process. Taking inspiration from photosynthetic antenna structures, we here consider ringlike systems and introduce a class of states we call ratchets: excited states capable of absorbing but not emitting light. This allows our antennae to absorb further photons while retaining the excitations from those that have already been captured. Simulations for a ring of four sites reveal a peak power enhancement by up to a factor of 35 owing to a combination of ratcheting and the prevention of emission through dark-state population. In the slow extraction limit, the achievable power enhancement due to ratcheting alone exceeds 20%.
dc.language.isoeng
dc.relation.ispartofJournal of Physical Chemistry Cen
dc.rightsCopyright © 2017 American Chemical Society. This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.en
dc.subjectQC Physicsen
dc.subjectQD Chemistryen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.subjectDASen
dc.subject.lccQCen
dc.subject.lccQDen
dc.subject.lccTKen
dc.titleQuantum-enhanced capture of photons using optical ratchet statesen
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/10.1021/acs.jpcc.7b07138
dc.description.statusPeer revieweden
dc.identifier.urlhttp://pubs.acs.org/doi/suppl/10.1021/acs.jpcc.7b07138en


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