Cryogenic Decade-Passband Superconducting Integrated Diplexer

Published

August 29, 2022

Author(s)

Akim Babenko, GREGOR LASSER, Nathan Flowers-Jacobs, Justus Brevik, Anna Fox, ZOYA POPOVIC, Paul Dresselhaus

Abstract

We demonstrate a decade-passband superconducting diplexer operating from dc to 27 GHz, integrated in a niobium, Josephson-junction(JJ)-compatible process. Both low- and high-pass branches are singly-terminated 5-pole Butter-worth filters with a 2.5 GHz cutoff. Several fabricated three-port diplexers are characterized with on-wafer cryogenic two-port calibration, and an insertion loss of 1 dB is measured across the entire frequency range. Although measurements are performed up to 27 GHz, the simulated upper diplexer band extends to 40 GHz, a record four-octave bandwidth. This device is useful when integrated in large-scale superconducting JJ-based quantum processors, broadband sensors, amplifiers and sources.

Proceedings Title

2022 IEEE/MTT-S International Microwave Symposium - IMS 2022

Conference Dates

June 19-24, 2022

Conference Location

Denver, CO, US

Pub Type

Conferences

Download Paper

https://doi.org/10.1109/IMS37962.2022.9865615

Local Download

Keywords

Diplexers, superconducting integrated circuits, superconducting filters, cryogenic on-wafer calibration

Citation

Babenko, A. , LASSER, G. , Flowers-Jacobs, N. , Brevik, J. , Fox, A. , Popovic, Z. and Dresselhaus, P. (2022), Cryogenic Decade-Passband Superconducting Integrated Diplexer, 2022 IEEE/MTT-S International Microwave Symposium - IMS 2022, Denver, CO, US, [online], https://doi.org/10.1109/IMS37962.2022.9865615, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933849 (Accessed April 27, 2024)