Comparison of cryogenic low-pass filters

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Review of Scientific Instruments. 2017, 88(11), 114703. ISSN 0034-6748. eISSN 1089-7623. Available under: doi: 10.1063/1.4995076
Zusammenfassung

Low-temperature electronic transport measurements with high energy resolution require both effective low-pass filtering of high-frequency input noise and an optimized thermalization of the electronic system of the experiment. In recent years, elaborate filter designs have been developed for cryogenic low-level measurements, driven by the growing interest in fundamental quantum-physical phenomena at energy scales corresponding to temperatures in the few millikelvin regime. However, a single filter concept is often insufficient to thermalize the electronic system to the cryogenic bath and eliminate spurious high frequency noise. Moreover, the available concepts often provide inadequate filtering to operate at temperatures below 10 mK, which are routinely available now in dilution cryogenic systems. Herein we provide a comprehensive analysis of commonly used filter types, introduce a novel compact filter type based on ferrite compounds optimized for the frequency range above 20 GHz, and develop an improved filtering scheme providing adaptable broad-band low-pass characteristic for cryogenic low-level and quantum measurement applications at temperatures down to few millikelvin.

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ISO 690THALMANN, Marcel, Hans PERNAU, Christoph STRUNK, Elke SCHEER, Torsten PIETSCH, 2017. Comparison of cryogenic low-pass filters. In: Review of Scientific Instruments. 2017, 88(11), 114703. ISSN 0034-6748. eISSN 1089-7623. Available under: doi: 10.1063/1.4995076
BibTex
@article{Thalmann2017-11Compa-40728,
  year={2017},
  doi={10.1063/1.4995076},
  title={Comparison of cryogenic low-pass filters},
  number={11},
  volume={88},
  issn={0034-6748},
  journal={Review of Scientific Instruments},
  author={Thalmann, Marcel and Pernau, Hans and Strunk, Christoph and Scheer, Elke and Pietsch, Torsten},
  note={Article Number: 114703}
}
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