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Peer-reviewedCC BYAdvanced science (Weinheim, Baden-Wurttemberg, Germany)

Advances in Josephson Junction Materials and Processes Toward Practical Quantum Computing.

  • Hyunseong Kim1,2
  • Gyunghyun Jang3
  • Seungwon Jin4
  • Jaewon An3
  • Dongbin Shin5,6
  • Hyeon-Jin Shin3
  • Jie Luo7
  • Akel Hashim1,2
  • Irfan Siddiqi1,2
  • Yosep Kim4
  • Long B Nguyen1,2
  • Hoon Hahn Yoon3
7 affiliations
  1. 1Applied Mathematics and Computational Research Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA.
  2. 2Department of Physics, University of California, Berkeley, California, USA.
  3. 3Department of Semiconductor Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.
  4. 4Department of Physics, Korea University, Seoul, Republic of Korea.
  5. 5Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.
  6. 6The Max Planck Institute for the Structure and Dynamics of Matter (MPSD) and the Center for Free Electron Laser Science (CFEL), Hamburg, Germany.
  7. 7Anyon Computing Inc., Emeryville, California, USA.
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Abstract

The Josephson junction (JJ) is the fundamental nonlinear building block of superconducting quantum technologies. Its macroscopic quantum tunneling physics underpins superconducting quantum computing, sensing, and communication, but scaling these platforms to utility-scale architectures places increasingly stringent demands on junction materials, interfaces, and fabrication. Practical quantum computing requires high reproducibility, low power consumption, tunability, a small device footprint, and resilience to noise and defects. This review surveys how advances in materials science, device characterization, and nanofabrication are addressing these challenges and redefining the figures of merit for next-generation JJs. This review also examines the evolution of fabrication strategies, from conventional multi-angle evaporation to foundry-compatible superconducting processes and the integration of emerging junction materials. Progress along these directions will determine how rapidly JJs move from laboratory-scale components to the foundation of industrial-scale quantum processors.

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Cite

BibTeXRIS
BibTeX
@article{kim2026advances,
  title = {{Advances in Josephson Junction Materials and Processes Toward Practical Quantum Computing.}},
  author = {Hyunseong Kim and Gyunghyun Jang and Seungwon Jin and Jaewon An and Dongbin Shin and Hyeon-Jin Shin and Jie Luo and Akel Hashim and Irfan Siddiqi and Yosep Kim and Long B Nguyen and Hoon Hahn Yoon},
  journal = {Advanced science (Weinheim, Baden-Wurttemberg, Germany)},
  year = {2026},
  month = oct,
  doi = {10.1002/advs.78427},
  url = {https://europepmc.org/article/MED/42949771},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Advances in Josephson Junction Materials and Processes Toward Practical Quantum Computing.
AU  - Hyunseong Kim
AU  - Gyunghyun Jang
AU  - Seungwon Jin
AU  - Jaewon An
AU  - Dongbin Shin
AU  - Hyeon-Jin Shin
AU  - Jie Luo
AU  - Akel Hashim
AU  - Irfan Siddiqi
AU  - Yosep Kim
AU  - Long B Nguyen
AU  - Hoon Hahn Yoon
PY  - 2026
DA  - 2026/10/28
JO  - Advanced science (Weinheim, Baden-Wurttemberg, Germany)
DO  - 10.1002/advs.78427
UR  - https://europepmc.org/article/MED/42949771
AB  - The Josephson junction (JJ) is the fundamental nonlinear building block of superconducting quantum technologies. Its macroscopic quantum tunneling physics underpins superconducting quantum computing, sensing, and communication, but scaling these platforms to utility-scale architectures places increasingly stringent demands on junction materials, interfaces, and fabrication. Practical quantum computing requires high reproducibility, low power consumption, tunability, a small device footprint, and resilience to noise and defects. This review surveys how advances in materials science, device characterization, and nanofabrication are addressing these challenges and redefining the figures of merit for next-generation JJs. This review also examines the evolution of fabrication strategies, from conventional multi-angle evaporation to foundry-compatible superconducting processes and the integration of emerging junction materials. Progress along these directions will determine how rapidly JJs move from laboratory-scale components to the foundation of industrial-scale quantum processors.
SN  - 2198-3844
ER  -