Decay-protected superconducting qubit with fast control enabled by integrated on-chip filters

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorSah, Aashishen_US
dc.contributor.authorKundu, Sumanen_US
dc.contributor.authorSuominen, Heikkien_US
dc.contributor.authorChen, Qimingen_US
dc.contributor.authorMöttönen, Mikkoen_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.groupauthorQuantum Computing and Devicesen
dc.contributor.groupauthorCentre of Excellence in Quantum Technology, QTFen
dc.contributor.organizationQuantum Computing and Devicesen_US
dc.contributor.organizationCentre of Excellence in Quantum Technology, QTFen_US
dc.date.accessioned2024-08-06T07:54:15Z
dc.date.available2024-08-06T07:54:15Z
dc.date.issued2024-12en_US
dc.descriptionPublisher Copyright: © The Author(s) 2024. | openaire: EC/H2020/101053801/EU//ConceptQ
dc.description.abstractAchieving fast gates and long coherence times for superconducting qubits presents challenges, typically requiring either a stronger coupling of the drive line or an excessively strong microwave signal to the qubit. To address this, we introduce on-chip filters of the qubit drive exhibiting a stopband at the qubit frequency, thus enabling long coherence times and strong coupling at the subharmonic frequency, facilitating fast single-qubit gates, and reduced thermal load. The filters exhibit an extrinsic relaxation time of a few seconds while enabling sub-10-ns gates with subharmonic control. Here we show up to 200-fold improvement in the measured relaxation time at the stopband. Furthermore, we implement subharmonic driving of Rabi oscillations with a π pulse duration of 12 ns. Our demonstration of on-chip filters and efficient subharmonic driving in a two-dimensional quantum processor paves the way for a scalable qubit architecture with reduced thermal load and noise from the control line.en
dc.description.versionPeer revieweden
dc.format.extent8
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationSah, A, Kundu, S, Suominen, H, Chen, Q & Möttönen, M 2024, ' Decay-protected superconducting qubit with fast control enabled by integrated on-chip filters ', Communications Physics, vol. 7, no. 1, 227, pp. 1-8 . https://doi.org/10.1038/s42005-024-01733-3en
dc.identifier.doi10.1038/s42005-024-01733-3en_US
dc.identifier.issn2399-3650
dc.identifier.otherPURE UUID: b7397dfd-981b-4383-9636-04049505d462en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/b7397dfd-981b-4383-9636-04049505d462en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85198397530&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/152377401/Decay-protected_superconducting_qubit_with_fast_control_enabled_by_integrated_on-chip_filters.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/129721
dc.identifier.urnURN:NBN:fi:aalto-202408065295
dc.language.isoenen
dc.publisherNature Publishing Group
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/101053801/EU//ConceptQen_US
dc.relation.ispartofseriesCommunications Physics
dc.relation.ispartofseriesVolume 7, issue 1, pp. 1-8
dc.rightsopenAccessen
dc.titleDecay-protected superconducting qubit with fast control enabled by integrated on-chip filtersen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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