Reaching the ultimate energy resolution of a quantum detector

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKarimi, Bayan
dc.contributor.authorBrange, Fredrik
dc.contributor.authorSamuelsson, Peter
dc.contributor.authorPekola, Jukka P.
dc.contributor.departmentCentre of Excellence in Quantum Technology, QTF
dc.contributor.departmentLund University
dc.contributor.departmentDepartment of Applied Physicsen
dc.date.accessioned2020-02-12T10:46:53Z
dc.date.available2020-02-12T10:46:53Z
dc.date.issued2020-12-01
dc.description| openaire: EC/H2020/742559/EU//SQH | openaire: EC/H2020/766025/EU//QuESTech
dc.description.abstractQuantum calorimetry, the thermal measurement of quanta, is a method of choice for ultrasensitive radiation detection ranging from microwaves to gamma rays. The fundamental temperature fluctuations of the calorimeter, dictated by the coupling of it to the heat bath, set the ultimate lower bound of its energy resolution. Here we reach this limit of fundamental equilibrium fluctuations of temperature in a nanoscale electron calorimeter, exchanging energy with the phonon bath at very low temperatures. The approach allows noninvasive measurement of energy transport in superconducting quantum circuits in the microwave regime with high efficiency, opening the way, for instance, to observe quantum jumps, detecting their energy to tackle central questions in quantum thermodynamics.en
dc.description.versionPeer revieweden
dc.format.extent6
dc.format.extent1-6
dc.format.mimetypeapplication/pdf
dc.identifier.citationKarimi , B , Brange , F , Samuelsson , P & Pekola , J P 2020 , ' Reaching the ultimate energy resolution of a quantum detector ' , Nature Communications , vol. 11 , no. 1 , 367 , pp. 1-6 . https://doi.org/10.1038/s41467-019-14247-2en
dc.identifier.doi10.1038/s41467-019-14247-2
dc.identifier.issn2041-1723
dc.identifier.otherPURE UUID: 1c472caf-c626-455f-ae6f-d74a31b94827
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/1c472caf-c626-455f-ae6f-d74a31b94827
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dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/40736471/s41467_019_14247_2.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/43048
dc.identifier.urnURN:NBN:fi:aalto-202002122117
dc.language.isoenen
dc.publisherNature Publishing Group
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/766025/EU//QuESTech
dc.relation.ispartofseriesNature Communicationsen
dc.relation.ispartofseriesVolume 11, issue 1en
dc.rightsopenAccessen
dc.titleReaching the ultimate energy resolution of a quantum detectoren
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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