# On-board calibrated radio-frequency measurement at cryogenic temperatures for determination of SrTiO3-based capacitor properties

https://mdr.nims.go.jp/datasets/8c6e4262-0b24-4024-b14e-053adfa83eab

## File

- [Manuscript.pdf](https://mdr.nims.go.jp/filesets/c4235f97-2245-4684-a07f-4df584b46495/download) ([Detail](https://mdr.nims.go.jp/filesets/c4235f97-2245-4684-a07f-4df584b46495.md))

## Id

8c6e4262-0b24-4024-b14e-053adfa83eab

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-10-13T13:59:39.616763Z

## Updated at

2025-10-21T07:06:12.988934Z

## Published at

2025-10-21T06:43:23.367150Z

## Doi

https://doi.org/10.48505/nims.5804

## First published url

https://doi.org/10.1063/5.0299758

## Date published

2025-10-13

## Recorded date published

2025-10-13

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: On-board calibrated radio-frequency measurement at cryogenic temperatures
    for determination of SrTiO3-based capacitor properties
  title_type: original
  lang: en

## Description

- description: Quantum computing has emerged as a promising technology for next-generation
    information processing, utilizing semiconductor quantum dots as one of the candidates
    for quantum bits. Radio-frequency (rf) reflectometry plays an important role in
    the readout of quantum dots but requires a precise rf measurement technique at
    cryogenic temperatures. While cryogenic calibration techniques, essential for
    rf reflectometry, have been developed, on-board calibration near the device remains
    an important challenge. In this study, we develop an on-board calibrated rf measurement
    system operating at 4 K for characterizing SrTiO3-based varactors, which are promising
    components for tunable impedance matching circuits. Our system enables accurate
    measurements by eliminating errors associated with long rf circuit lines. We investigate
    the effects of annealing conditions, crystal orientation, and Ca doping of SrTiO3
    crystals on the varactor properties in the frequency range for rf reflectometry.
    Our results provide insights for optimizing these components for cryogenic rf
    applications in quantum information processing systems.
  description_type: abstract
  lang: und

## Creator

- name: Akitomi Shirachi
  role: author
- name: Motoya Shinozaki
  role: author
  orcid: https://orcid.org/0000-0001-9460-9156
- name: Yasuhide Tomioka
  role: author
- name: Hisashi Inoue
  role: author
  orcid: https://orcid.org/0009-0008-6307-3772
- name: Kenta Itoh
  role: author
- name: Yusuke Kozuka
  role: author
  orcid: https://orcid.org/0000-0001-7674-600X
- name: Takanobu Watanabe
  role: author
  orcid: https://orcid.org/0000-0002-9421-8195
- name: Shoichi Sato
  role: author
- name: Takeshi Kumasaka
  role: author
- name: Tomohiro Otsuka
  role: author
  orcid: https://orcid.org/0000-0003-2532-643X

## Contact agent



## Publisher

organization: AIP Publishing

## Managing organization



## Keyword

- subject: SrTiO3
  schema: not_defined
- subject: RF reflectometry
  schema: not_defined

## Rights

- description: 'This article may be downloaded for personal use only. Any other use
    requires prior permission of the author and AIP Publishing. This article appeared
    in Akitomi Shirachi, Motoya Shinozaki, Yasuhide Tomioka, Hisashi Inoue, Kenta
    Itoh, Yusuke Kozuka, Takanobu Watanabe, Shoichi Sato, Takeshi Kumasaka, Tomohiro
    Otsuka; On-board calibrated radio-frequency measurement at cryogenic temperatures
    for determination of SrTiO3-based capacitor properties. Appl. Phys. Lett. 13 October
    2025; 127 (15): 153501 and may be found at https://doi.org/10.1063/5.0299758'
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Applied Physics Letters
  issn: '00036951'
  volume: '127'
  issue: '15'
  article_number: '153501'

## Conference



## Related item



## Funding

- funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Custom property



## Fileset

- id: c4235f97-2245-4684-a07f-4df584b46495
  filename: Manuscript.pdf
  content_type: application/pdf
  size: 872175
  md5: 70379aef9683a3aa4b2efd4615e51621

## Thumbnail

fileset_id: c4235f97-2245-4684-a07f-4df584b46495
filename: Manuscript.pdf