Dynamics of measurement-induced state transitions in superconducting qubits
We have investigated temporal fluctuation of superconducting qubits via the time-resolved measurement for an IBM Quantum system. We found that the qubit error rate abruptly changes during specific time intervals. Each high error state persists for several tens of seconds and exhibits an on-off behavior. The observed temporal instability can be attributed to qubit transitions induced by a measurement stimulus. Resonant transition between fluctuating dressed states of the qubits coupled with high-frequency resonators can be responsible for the error-rate change.
Authors
- Naoki Kanazawa (ORCID: https://orcid.org/0000-0002-4192-5558)
- Eiji Saitoh (ORCID: https://orcid.org/0000-0003-2675-0718)
- Masao Tokunari (ORCID: https://orcid.org/0009-0004-2725-055X)
- Toshinari Itoko (ORCID: https://orcid.org/0009-0006-2611-2301)
- Shunsuke Daimon (ORCID: https://orcid.org/0000-0001-6942-4571)
- Yuta Hirasaki (ORCID: https://orcid.org/0009-0004-6773-4831)
Institutions
- Tohoku University (JP)
- Advanced Institute of Materials Science (JP)
- National Institutes for Quantum Science and Technology (JP)
- RIKEN Center for Emergent Matter Science (JP)
- IBM Research - Tokyo (JP)
- The University of Tokyo (JP)
Publication Details
- Journal
- Journal of Applied Physics
- Published
- 2024-09-23
- DOI
- https://doi.org/10.1063/5.0226517
- Citations
- 2
- Primary Topic
- Quantum Information and Cryptography
- Type
- article
- Field-Weighted Citation Impact
- 0.69
Funders
- University of Tokyo
- Japan Society for the Promotion of Science
- Core Research for Evolutional Science and Technology