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dc.contributor.authorTiedau, J.
dc.contributor.authorShchesnovich, V. S.
dc.contributor.authorMogilevtsev, D.
dc.contributor.authorAnsari, V.
dc.contributor.authorHarder, G.
dc.contributor.authorBartley, T. J.
dc.contributor.authorKorolkova, N.
dc.contributor.authorSilberhorn, Ch
dc.identifier.citationTiedau , J , Shchesnovich , V S , Mogilevtsev , D , Ansari , V , Harder , G , Bartley , T J , Korolkova , N & Silberhorn , C 2018 , ' Quantum state and mode profile tomography by the overlap ' , New Journal of Physics , vol. 20 , 033003 .
dc.identifier.otherORCID: /0000-0003-4830-9667/work/59302849
dc.descriptionVS acknowledge support from the National Council for Scientific and Technological Development (CNPq) of Brazil, grant 304129/2015-1, and by the São Paulo Research Foundation (FAPESP), grant 2015/23296-8. DM acknowledge support from the EUproject Horizon-2020 SUPERTWIN id.686731, the National Academy of Sciences of Belarus program ‘Convergence’ and FAPESP grant 2014/21188-0. NK acknowledges the support from the Scottish Universities Physics Alliance (SUPA) and from the International Max Planck Partnership (IMPP) with Scottish Universities. JT and CS acknowledge support from European Union Grant No. 665148 (QCUMbER). TB acknowledges support from theDFG under TRR 142.en
dc.description.abstractAny measurement scheme involving interference of quantum states of the electromagnetic field necessarily mixes information about the spatiotemporal structure of these fields and quantum states in the recorded data. Weshow that in this case, a trade-off is possible between extracting information about the quantum states and the structure of the underlying fields, with the modal overlap being either a goal or a convenient tool of the reconstruction. Weshow that varying quantum states in a controlled way allows one to infer temporal profiles of modes. Vice versa, for the known quantum state of the probe and controlled variable overlap, one can infer the quantum state of the signal. We demonstrate this trade-off. by performing an experiment using the simplest on-off detection in an unbalanced weak homodyning scheme. For the single-mode case, we demonstrate experimentally inference of the overlap and a few-photon signal state. Moreover, we show theoretically that the same single-detector scheme is sufficient even for arbitrary multi-mode fields.
dc.relation.ispartofNew Journal of Physicsen
dc.subjectQuantum opticsen
dc.subjectPhoton statisticsen
dc.subjectQuantum state tomographyen
dc.subjectHomodyne detectionen
dc.subjectQC Physicsen
dc.titleQuantum state and mode profile tomography by the overlapen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

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