Superconducting electronics at mK temperatures

Pertti Hakonen, Mikko Kiviranta, Heikki Seppä

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)


    The interest in superconducting electronics working at millikelvin temperatures has increased during the past few years, and several novel devices and amplifiers utilizing mesoscopic Josephson junctions have been developed. We review the present status of a few of these devices, foremost the inductively-read superconducting Cooper pair transistor and the Bloch oscillating transistor. As a comparison, we review the status of dc SQUID devices which provide the traditional amplifier choice when approaching the standard quantum limit in ultra-sensitive measurements. In addition, we discuss a new type of current pump, the Sluice, in which modulation of Josephson energy is employed to produce large currents at high accuracy. These new developments continue the flourishing “Otaniemi tradition” in ultra-low-temperature physics and SQUID magnetometry for which Academician Olli V. Lounasmaa acted as the primus motor over three decades.
    Original languageEnglish
    Pages (from-to)823 - 838
    Number of pages16
    JournalJournal of Low Temperature Physics
    Issue number5-6
    Publication statusPublished - 2004
    MoE publication typeA1 Journal article-refereed


    • SQUID
    • superconducting set
    • bloch oscillating transistor
    • low noise
    • amplifier
    • millikelvin
    • Josephson junction
    • reviews


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