Measurement Techniques for Superconducting Microwave Resonators Towards Quantum Device Applications

Superconducting qubits, though promising for both near-term problem-solving as well as the development of large-scale quantum computing systems, are limited in performance largely by materials-induced decoherence channels which are maximized at millikelvin temperatures, single photon powers, and mic...

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Bibliographic Details
Published in2022 IEEE/MTT-S International Microwave Symposium - IMS 2022 pp. 230 - 232
Main Author McRae, Corey Rae H.
Format Conference Proceeding
LanguageEnglish
Published IEEE 19.06.2022
Subjects
coplanar waveguides
cryogenics
Current measurement
dielectric loss
microwave components
Microwave measurement
Microwave theory and techniques
quantum computing
Qubit
resonators
Superconducting materials
Temperature sensors
Waveguide components
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Summary:Superconducting qubits, though promising for both near-term problem-solving as well as the development of large-scale quantum computing systems, are limited in performance largely by materials-induced decoherence channels which are maximized at millikelvin temperatures, single photon powers, and microwave frequencies. Superconducting microwave resonators are ideal tools for measuring these materials losses due to their simplicity, well-understood behavior, and sensitivity to these same losses. In order to better understand and mitigate dominant qubit decoherence channels, accurate and precise characterization of superconducting microwave resonator performance is critical. In this paper, current measurement techniques for superconducting microwave resonators are discussed, including experimental set-up, error analysis, and cryogenic calibration of a vector network analyzer.
ISSN:2576-7216
DOI:10.1109/IMS37962.2022.9865517