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Title: Note: Cryogenic coaxial microwave filters

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.
Authors:
;  [1] ;  [1] ;  [2]
  1. Department of Physics, Royal Holloway, University of London, Egham TW20 0EX (United Kingdom)
  2. (United Kingdom)
Publication Date:
OSTI Identifier:
22253550
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRIC POTENTIAL; FABRICATION; FILTERS; JOSEPHSON JUNCTIONS; MICROWAVE RADIATION; PERFORMANCE; QUANTUM INFORMATION