Abstract
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 language | English |
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| Journal | Review of Scientific Instruments |
| Volume | 85 |
| Issue number | 026104 |
| Publication status | Published - 5 Feb 2014 |