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- Park, Kibog
- Emergent Materials & Devices Lab.
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Flux-Driven Josephson Parametric Amplifier Fabricated Using the Nb/AlOx/Nb Trilayer Process
- Author(s)
- Choi, Gahyun, Kim, Bokyung, Choi, Jiman, Park, Kibog, Chong, Yonuk, Lee, Yong-Ho
- Issued Date
- 2023-08
- Citation
- IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, v.33, no.5, pp.1701504
- Abstract
- In this paper, we report a flux-driven Josephson parametric amplifier (JPA) fabricated using the Nb/AlOx/Nb Josephson junction process. The JPA consists of a parallel-plate type coupling capacitor and quarter-wavelength resonator terminated with a DC-SQUID. We adopt a simple process using well-established Nb trilayer technology. The overall configuration time of the Nb-based JPA can be shortened by measuring resonant frequency and its bias dependence in liquid helium. Amplification of the pre-tested device was demonstrated, showing a gain of 20 dB in a -3 dB bandwidth of 17 MHz in a 10 mK dilution fridge.
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- ISSN
- 1051-8223
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