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Theory of the signal transfer and noise properties of the rf SQUID

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Abstract

The forward and reverse interactions between the SQUID input and output via the weak link are investigated in detail and presented in the form of an electronic equivalent circuit of the SQUID. The input and output impedances and the gain of the SQUID are given. The noise properties for all kinds of source impedances are computed and optimal values derived.

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Authors and Affiliations

  1. Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland

    G. J. Ehnholm

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  1. G. J. Ehnholm
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Supported financially by the Finnish Academy.

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Ehnholm, G.J. Theory of the signal transfer and noise properties of the rf SQUID. J Low Temp Phys 29, 1–27 (1977). https://doi.org/10.1007/BF00659086

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  • DOI: https://doi.org/10.1007/BF00659086

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