# Crystalline superconductor-semiconductor Josephson junctions for compact superconducting qubits

https://mdr.nims.go.jp/datasets/52804611-dabb-4dca-abf9-6690a0231203

## File

- [2025A01283G_LB18980N.pdf](https://mdr.nims.go.jp/filesets/784f613d-afd3-4c96-8d99-4c2f319528a2/download) ([Detail](https://mdr.nims.go.jp/filesets/784f613d-afd3-4c96-8d99-4c2f319528a2.md))

## Id

52804611-dabb-4dca-abf9-6690a0231203

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-06-30T00:33:58.539134Z

## Updated at

2026-07-02T06:49:51.006644Z

## Published at

2026-07-02T09:28:22.934226Z

## Doi



## First published url

https://doi.org/10.1103/3ssz-jjt6

## Date published

2025-09-05

## Recorded date published

2025-9

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Crystalline superconductor-semiconductor Josephson junctions for compact
    superconducting qubits
  title_type: original
  lang: en

## Description

- description: The narrow band gaps of semiconductors allow for thick, uniform Josephson
    junction barriers, potentially enabling reproducible, stable, and compact superconducting
    qubits. We study vertically stacked van der Waals Josephson junctions with semiconducting
    weak links, whose crystalline structures and clean interfaces offer a promising
    platform for quantum devices. We observe robust Josephson coupling across 2–12
    nm (3–18 atomic layers) of semiconducting WSe2 and, notably, a crossover from
    proximity- to tunneling-type behavior with increasing weak-link thickness. Building
    on these results, we fabricate a prototype all-crystalline merged-element transmon
    qubit with transmon frequency and anharmonicity closely matching design parameters.
    We demonstrate dispersive coupling between this transmon and a microwave resonator,
    highlighting the potential of crystalline superconductor-semiconductor structures
    for compact, tailored superconducting quantum devices.
  description_type: abstract
  lang: en

## Creator

- name: Jesse Balgley
  role: author
- name: Jinho Park
  role: author
- name: Xuanjing Chu
  role: author
- name: Ethan G. Arnault
  role: author
- name: Martin V. Gustafsson
  role: author
- name: Leonardo Ranzani
  role: author
- name: Madisen Holbrook
  role: author
- name: Yangchen He
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Daniel Rhodes
  role: author
- name: Vasili Perebeinos
  role: author
- name: James Hone
  role: author
- name: Kin Chung Fong
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Josephson junction
  schema: not_defined
- subject: van der Waals heterostructure
  schema: not_defined
- subject: Transmon qubit
  schema: not_defined

## Rights

- description: "©2026 American Physical Society"
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review Applied
  issn: '23317019'
  volume: '24'
  issue: '3'
  article_number: '034016'

## Conference



## Related item



## Funding

- funder_name: National Science Foundation
- identifier: DMR-2011738
  funder_name: Materials Research Science and Engineering Center
- identifier: '2235276'
  funder_name: Materials Research Science and Engineering Center
- funder_name: MEXT, Japan
- identifier: GBMF10277
  funder_name: Gordon and Betty Moore Foundation’s EPiQS Initiative
- funder_name: National Research Foundation of Korea
- identifier: 21H05233
  funder_name: JSPS KAKENHI
- identifier: 23H02052
  funder_name: JSPS KAKENHI
- identifier: W911NF-22-C-0021
  funder_name: Army Research Office

## Instrument



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



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## Fileset

- id: 784f613d-afd3-4c96-8d99-4c2f319528a2
  filename: 2025A01283G_LB18980N.pdf
  content_type: application/pdf
  size: 826638
  md5: 5b1fa9ba5355de98db3ffb1b9854a693

## Thumbnail

fileset_id: 784f613d-afd3-4c96-8d99-4c2f319528a2
filename: 2025A01283G_LB18980N.pdf