Realisation of a quantum current standard at liquid helium temperature with sub-ppm reproducibility

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Giblin, Stephen Mykkanen, Emma Kemppinen, Antti Immonen, Pekka Manninen, Antti Jenei, Mate Mottonen, Mikko Yamahata, Gento Fujiwara, Akira Kataoka, Masaya 2020-04-28T06:31:50Z 2020-04-28T06:31:50Z 2020-04
dc.identifier.citation Giblin , S , Mykkanen , E , Kemppinen , A , Immonen , P , Manninen , A , Jenei , M , Mottonen , M , Yamahata , G , Fujiwara , A & Kataoka , M 2020 , ' Realisation of a quantum current standard at liquid helium temperature with sub-ppm reproducibility ' , Metrologia , vol. 57 , no. 2 , 025013 . en
dc.identifier.issn 0026-1394
dc.identifier.issn 1681-7575
dc.identifier.other PURE UUID: 3b1b6c7d-6f9c-4308-a4a1-e884f230697f
dc.identifier.other PURE ITEMURL:
dc.description Mate Jenein mukaan kyseessä on post-print. Kysytty erikseen.
dc.description.abstract A silicon electron pump operating at the temperature of liquid helium has demonstrated repeatable operation with sub-ppm accuracy. The pump current, approximately 168 pA, is measured by three laboratories, and the measurements agree with the expected current ef within the uncertainties which range from 0.2 ppm to 1.3 ppm. All the measurements are carried out in zero applied magnetic field, and the pump drive signal is a sine wave. The combination of simple operating conditions with high accuracy demonstrates the possibility that an electron pump can operate as a current standard in a National Measurement Institute. We also discuss other practical aspects of using the electron pump as a current standard, such as testing its robustness to changes in the control parameters, and using a rapid tuning procedure to locate the optimal operation point. en
dc.format.extent 8
dc.language.iso en en
dc.publisher IOP Publishing Ltd.
dc.relation.ispartofseries Metrologia en
dc.relation.ispartofseries Volume 57, issue 2 en
dc.rights embargoedAccess en
dc.subject.other 114 Physical sciences en
dc.title Realisation of a quantum current standard at liquid helium temperature with sub-ppm reproducibility en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department National Physical Laboratory
dc.contributor.department VTT Technical Research Centre of Finland
dc.contributor.department Centre of Excellence in Quantum Technology, QTF
dc.contributor.department Nippon Telegraph and Telephone Corporation
dc.contributor.department Department of Applied Physics en
dc.subject.keyword electron pump
dc.subject.keyword quantised charge pumping
dc.subject.keyword SI base units
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-202004282863
dc.identifier.doi 10.1088/1681-7575/ab72e0 info:eu-repo/date/embargoEnd/2021-03-19

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