Influence of device non-uniformities on the accuracy of Coulomb blockade thermometry

Jukka P. Pekola; Eemil Praks; Nikolai Yurttagül; Bayan Karimi

doi:10.1088/1681-7575/ac79e8

Influence of device non-uniformities on the accuracy of Coulomb blockade thermometry

Jukka P. Pekola^*
, Eemil Praks
, Nikolai Yurttagül
, Bayan Karimi

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

2 Citations (Scopus)

69 Downloads (Pure)

Abstract

We investigate temperature uncertainty of Coulomb blockade thermometer (CBT) arising from inevitable non-uniformities in tunnel junction arrays. The corrections are proportional to the junction resistance variance in the linear operation regime and this result holds approximately also beyond this originally studied high temperature range. We present both analytical and numerical results, and discuss briefly their implications on achievable uniformity based on state-of-the-art fabrication of sensors.

Original language	English
Article number	045009
Pages (from-to)	1-8
Number of pages	8
Journal	Metrologia
Volume	59
Issue number	4
DOIs	https://doi.org/10.1088/1681-7575/ac79e8
Publication status	Published - 1 Aug 2022
MoE publication type	A1 Journal article-refereed

Funding

We thank Joonas T Peltonen for useful discussions. This work was supported by Academy of Finland Grant 312057 (QTF Centre of Excellence), European Microkelvin Platform (EMP, No. 824109 EU Horizon 2020) and Real-K Project (Grant No. 18SIB02). Real-K received funding from the European Metrology Programme for Innovation and Research (EMPIR) co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme. The numerical calculations were performed using the computer infrastructure within the Aalto University School of Science (Science-IT).

Keywords

Coulomb blockade
low temperature
non-uniformity errors
thermometry

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10.1088/1681-7575/ac79e8Licence: CC BY

Influence of device non-uniformities on the accuracy of Coulomb blockade thermometryFinal published version, 848 KBLicence: CC BY

Cite this

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title = "Influence of device non-uniformities on the accuracy of Coulomb blockade thermometry",

abstract = "We investigate temperature uncertainty of Coulomb blockade thermometer (CBT) arising from inevitable non-uniformities in tunnel junction arrays. The corrections are proportional to the junction resistance variance in the linear operation regime and this result holds approximately also beyond this originally studied high temperature range. We present both analytical and numerical results, and discuss briefly their implications on achievable uniformity based on state-of-the-art fabrication of sensors.",

keywords = "Coulomb blockade, low temperature, non-uniformity errors, thermometry",

author = "Pekola, \{Jukka P.\} and Eemil Praks and Nikolai Yurttag{\"u}l and Bayan Karimi",

note = "| openaire: EC/H2020/824109/EU//EMP Funding Information: We thank Joonas T Peltonen for useful discussions. This work was supported by Academy of Finland Grant 312057 (QTF Centre of Excellence), European Microkelvin Platform (EMP, No. 824109 EU Horizon 2020) and Real-K Project (Grant No. 18SIB02). Real-K received funding from the European Metrology Programme for Innovation and Research (EMPIR) co-financed by the Participating States and from the European Union{\textquoteright}s Horizon 2020 research and innovation programme. The numerical calculations were performed using the computer infrastructure within the Aalto University School of Science (Science-IT). Publisher Copyright: {\textcopyright} 2022 BIPM \& IOP Publishing Ltd.",

year = "2022",

month = aug,

day = "1",

doi = "10.1088/1681-7575/ac79e8",

language = "English",

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AU - Pekola, Jukka P.

AU - Praks, Eemil

AU - Yurttagül, Nikolai

AU - Karimi, Bayan

N1 - | openaire: EC/H2020/824109/EU//EMP Funding Information: We thank Joonas T Peltonen for useful discussions. This work was supported by Academy of Finland Grant 312057 (QTF Centre of Excellence), European Microkelvin Platform (EMP, No. 824109 EU Horizon 2020) and Real-K Project (Grant No. 18SIB02). Real-K received funding from the European Metrology Programme for Innovation and Research (EMPIR) co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme. The numerical calculations were performed using the computer infrastructure within the Aalto University School of Science (Science-IT). Publisher Copyright: © 2022 BIPM & IOP Publishing Ltd.

PY - 2022/8/1

Y1 - 2022/8/1

N2 - We investigate temperature uncertainty of Coulomb blockade thermometer (CBT) arising from inevitable non-uniformities in tunnel junction arrays. The corrections are proportional to the junction resistance variance in the linear operation regime and this result holds approximately also beyond this originally studied high temperature range. We present both analytical and numerical results, and discuss briefly their implications on achievable uniformity based on state-of-the-art fabrication of sensors.

AB - We investigate temperature uncertainty of Coulomb blockade thermometer (CBT) arising from inevitable non-uniformities in tunnel junction arrays. The corrections are proportional to the junction resistance variance in the linear operation regime and this result holds approximately also beyond this originally studied high temperature range. We present both analytical and numerical results, and discuss briefly their implications on achievable uniformity based on state-of-the-art fabrication of sensors.

KW - Coulomb blockade

KW - low temperature

KW - non-uniformity errors

KW - thermometry

UR - https://www.scopus.com/pages/publications/85134852638

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DO - 10.1088/1681-7575/ac79e8

M3 - Article

AN - SCOPUS:85134852638

SN - 0026-1394

VL - 59

SP - 1

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JO - Metrologia

JF - Metrologia

IS - 4

M1 - 045009

ER -

Influence of device non-uniformities on the accuracy of Coulomb blockade thermometry

Abstract

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Keywords

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-: Realisation of the redefined kelvin

QTF: Finnish Centre of Excellence in Quantum Technology

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Influence of device non-uniformities on the accuracy of Coulomb blockade thermometry

Abstract

Funding

Keywords

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Other files and links

Fingerprint

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-: Realisation of the redefined kelvin

QTF: Finnish Centre of Excellence in Quantum Technology

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Science-IT

Cite this