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dc.contributor.authorLambert, N. J.
dc.contributor.authorEsmail, A. A.
dc.contributor.authorPollock, F. A.
dc.contributor.authorEdwards, M.
dc.contributor.authorLovett, B. W.
dc.contributor.authorFerguson, A. J.
dc.identifier.citationLambert , N J , Esmail , A A , Pollock , F A , Edwards , M , Lovett , B W & Ferguson , A J 2017 , ' Microwave irradiation and quasiparticles in a superconducting double dot ' , Physical Review. B, Condensed matter and materials physics , vol. 95 , no. 23 , 235413 .
dc.identifier.otherPURE: 250512168
dc.identifier.otherPURE UUID: 09c74af1-13a7-4c36-ba7d-6dd8b419edb5
dc.identifier.otherBibtex: urn:ef6dda7527b5e289b7fa5e636877248f
dc.identifier.otherScopus: 85024363371
dc.identifier.otherORCID: /0000-0001-5142-9585/work/47136583
dc.identifier.otherWOS: 000402973100003
dc.descriptionFunding: UK EPSRC EP/K025562.en
dc.description.abstractWe study the interaction of the charge states of a superconducting double dot, comprising two superconducting islands coupled by a Josephson junction, with microwaves between 2 and 55 GHz. We observe resonant transitions between even-parity charge states at relatively low frequencies and breaking of Cooper pairs under higher-frequency irradiation, allowing our device to act as a click detector for microwave photons. By applying a magnetic field and tuning the pair-breaking energy, we perform spectroscopy on the environment in our cryostat and determine the temperature of a nonequilibrium photon bath. Finally, we exploit the band structure of our device to break Cooper pairs dependent on the symmetry of the initial Cooper pair state.
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rights© 2017, American Physical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at /
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.titleMicrowave irradiation and quasiparticles in a superconducting double doten
dc.typeJournal articleen
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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