Control of Coulomb blockade in a mesoscopic Josephson junction using single electron tunneling

Juha Hassel, Heikki Seppä, Julien Delahaye, Pertti Hakonen

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    Abstract

    We study a circuit where a mesoscopic Josephson junction (JJ) is embedded in an environment consisting of a large bias resistor and a normal-insulator-superconductor (NIS) junction. The effective Coulomb blockade of the JJ can be controlled by the tunneling current through the NIS junction leading to transistor-like characteristics. We show using phase correlation theory and numerical simulations that substantial current gain with low current noise (in≲1 fA/√Hz) and noise temperature (≲0.1 K) can be achieved. Good agreement between our numerical simulations and experimental results is obtained.
    Original languageEnglish
    Pages (from-to)8059 - 8062
    Number of pages4
    JournalJournal of Applied Physics
    Volume95
    Issue number12
    DOIs
    Publication statusPublished - 2004
    MoE publication typeA1 Journal article-refereed

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    Keywords

    • Josephson junction

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