Characterization of NB and TiN superconducting CPW lines with thru-line calibration method

Wei-Tao Lv; Jie Hu; Jing-Pin Yang; Zheng Wang; Sheng-Cai Shi

doi:10.1117/12.2500443

9 November 2018 Characterization of NB and TiN superconducting CPW lines with thru-line calibration method

Wei-Tao Lv, Jie Hu, Jing-Pin Yang, Zheng Wang, Sheng-Cai Shi

Proceedings Volume 10826, Infrared, Millimeter-Wave, and Terahertz Technologies V; 108260S (2018) https://doi.org/10.1117/12.2500443
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

Microwave kinetic inductance detectors (MKIDs) are playing an increasingly role in THz astronomy. Superconducting coplanar waveguide (CPW) lines are commonly adopted in MKIDs for the resonators as well as the readout through line. It is therefore of particular interest to characterize the transmission properities of superconducting CPW lines at low temperatures. A cryogenic through-line method based on two cryogenic RF switches is proposed to characterize Nb and TiN superconducting CPW lines. On-chip calibration has been successfully carried out. Detailed results and analysis will be presented.

Citation Download Citation

Wei-Tao Lv, Jie Hu, Jing-Pin Yang, Zheng Wang, and Sheng-Cai Shi "Characterization of NB and TiN superconducting CPW lines with thru-line calibration method", Proc. SPIE 10826, Infrared, Millimeter-Wave, and Terahertz Technologies V, 108260S (9 November 2018); https://doi.org/10.1117/12.2500443

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