Demostration of an rf-SQUID based three-wave mixing traveling-wave parametric amplifier
ORAL
Abstract
Modern quantum experiments, which operate with microwave signals at power levels of a few fW, greatly benefit from amplification with near quantum-limited added noise. To address this demand, while also providing a large bandwidth, we realize a traveling-wave parametric amplifier (TWPA) based on an array of ~2000 rf-SQUIDs [1]. The device operates in a three-wave mixing regime, delivering gain of 18 dB over a bandwidth of ~4 GHz and exhibits a saturation power of approximately -90 dBm. We achieve phase-matching by periodic capacitance loading [2], which we optimised by time-domain circuit simulations. Our TWPA is fabricated using Nb/Al-AlOx/Nb trilayer technology. We present simulations and experimental results including noise characterization of the device.
[1] Zorin, A. B. Physical Review Applied 6.3 (2016): 034006.
[2] Gaydamachenko, V., et al. Journal of Applied Physics 132.15 (2022): 154401
[1] Zorin, A. B. Physical Review Applied 6.3 (2016): 034006.
[2] Gaydamachenko, V., et al. Journal of Applied Physics 132.15 (2022): 154401
*This work was supported by the German Federal Ministry of Education and Research (BMBF) within the framework program "Quantum technologies—From basic research to market" (Grant No. 13N15949) and by the European Union under Horizon Europe 2021-2027 Framework Programme, Grant Agreement number 101080152. C.K. gratefully acknowledges the support of the Braunschweig International Graduate School of Metrology B-IGSM and the DFG Research Training Group 1952 Metrology for Complex Nanosystems.
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Presenters
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Victor Gaydamachenko
- Physikalisch-Technische Bundesanstalt