Effect of gamma radiation on low kinetic inductance superconducting microwave resonators
Understanding the impact of ionizing radiation on superconducting microwave resonators is essential for improving the coherence of superconducting quantum processors. In this work, we examine the response of Nb coplanar waveguide (CPW) resonators—with single-photon intrinsic quality factors on the order of several hundred thousand—to γ radiation from a Cs-137 source. We observed no significant degradation in the internal quality factor during the irradiation of Nb CPW resonators on sapphire or Si(100) substrates.
Authors
- Kaiwen Zheng (ORCID: https://orcid.org/0000-0003-1795-6351)
- Daria Kowsari (ORCID: https://orcid.org/0000-0002-5774-7848)
- David Wisbey (ORCID: https://orcid.org/0000-0001-6376-6052)
- N. J. Thobaben (ORCID: https://orcid.org/0000-0001-5561-7057)
- Kater Murch (ORCID: https://orcid.org/0000-0002-1536-294X)
- X. Zhao (ORCID: https://orcid.org/0009-0000-1596-7423)
- D. T. Cherry (ORCID: https://orcid.org/0009-0006-2358-4127)
- G. A. Osmon
- A. E. Sohm (ORCID: https://orcid.org/0009-0003-5370-2356)
- R. L. Cooper (ORCID: https://orcid.org/0000-0003-4695-2018)
- K. D. Goodman
Institutions
- Boston College (US)
- Amazon (United States) (US)
- Washington University in St. Louis (US)
- University of Missouri–St. Louis (US)
- Naval Surface Warfare Center (US)
- Saint Louis University (US)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2026-04-06
- DOI
- https://doi.org/10.1063/5.0305040
- Primary Topic
- Advanced Frequency and Time Standards
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Naval Surface Warfare Center Crane Division
- National Science Foundation