Cryogenic coaxial microwave filters

Giovanna Tancredi, Simon Schmidlin, Phil Meeson

Research output: Contribution to journalArticlepeer-review


The careful filtering of microwave electromagnetic radiation is critical for controlling the electromagnetic environment for experiments in solid-state quantum information processing and quantum metrology at millikelvin temperatures. We describe the design and fabrication of a coaxial filter assembly and demonstrate that its performance is in excellent agreement with theoretical modelling. We further perform an indicative test of the operation of the filters by making current-voltage measurements of small, underdamped Josephson junctions at 15 mK.
Original languageEnglish
JournalReview of Scientific Instruments
Issue number026104
Publication statusPublished - 5 Feb 2014

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