Verification of stable operation of rapid single flux quantum devices with frequency-dependent dissipation

Juha Hassel (Corresponding Author), Leif Grönberg, Panu Helistö

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    It has been suggested that rapid single flux quantum (RSFQ) devices could be used as the classical interface of superconducting qubit systems. One problem is that the interface acts as a dissipative environment for a qubit. Recently, ways to modify the RSFQ damping to reduce the dissipation have been introduced. One of the solutions is to damp the Josephson junctions by a frequency-dependent linear circuit instead of the plain resistor. The approach has previously been experimentally tested with a simple SFQ comparator. In this paper we perform experiments with a full RSFQ circuit, and thus conclude that in terms of stable operation the approach is applicable to scalable RSFQ circuits. Realization and optimization issues are also discussed.
    Original languageEnglish
    Article number157
    Number of pages9
    JournalNew Journal of Physics
    Volume9
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    dissipation
    linear circuits
    plains
    resistors
    Josephson junctions
    damping
    optimization

    Keywords

    • Josephson junction

    Cite this

    @article{7016a7237d1340e6bfde1ec086a84379,
    title = "Verification of stable operation of rapid single flux quantum devices with frequency-dependent dissipation",
    abstract = "It has been suggested that rapid single flux quantum (RSFQ) devices could be used as the classical interface of superconducting qubit systems. One problem is that the interface acts as a dissipative environment for a qubit. Recently, ways to modify the RSFQ damping to reduce the dissipation have been introduced. One of the solutions is to damp the Josephson junctions by a frequency-dependent linear circuit instead of the plain resistor. The approach has previously been experimentally tested with a simple SFQ comparator. In this paper we perform experiments with a full RSFQ circuit, and thus conclude that in terms of stable operation the approach is applicable to scalable RSFQ circuits. Realization and optimization issues are also discussed.",
    keywords = "Josephson junction",
    author = "Juha Hassel and Leif Gr{\"o}nberg and Panu Helist{\"o}",
    note = "Project code: 1267",
    year = "2007",
    doi = "10.1088/1367-2630/9/5/157",
    language = "English",
    volume = "9",
    journal = "New Journal of Physics",
    issn = "1367-2630",
    publisher = "Institute of Physics IOP",

    }

    Verification of stable operation of rapid single flux quantum devices with frequency-dependent dissipation. / Hassel, Juha (Corresponding Author); Grönberg, Leif; Helistö, Panu.

    In: New Journal of Physics, Vol. 9, 157, 2007.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Verification of stable operation of rapid single flux quantum devices with frequency-dependent dissipation

    AU - Hassel, Juha

    AU - Grönberg, Leif

    AU - Helistö, Panu

    N1 - Project code: 1267

    PY - 2007

    Y1 - 2007

    N2 - It has been suggested that rapid single flux quantum (RSFQ) devices could be used as the classical interface of superconducting qubit systems. One problem is that the interface acts as a dissipative environment for a qubit. Recently, ways to modify the RSFQ damping to reduce the dissipation have been introduced. One of the solutions is to damp the Josephson junctions by a frequency-dependent linear circuit instead of the plain resistor. The approach has previously been experimentally tested with a simple SFQ comparator. In this paper we perform experiments with a full RSFQ circuit, and thus conclude that in terms of stable operation the approach is applicable to scalable RSFQ circuits. Realization and optimization issues are also discussed.

    AB - It has been suggested that rapid single flux quantum (RSFQ) devices could be used as the classical interface of superconducting qubit systems. One problem is that the interface acts as a dissipative environment for a qubit. Recently, ways to modify the RSFQ damping to reduce the dissipation have been introduced. One of the solutions is to damp the Josephson junctions by a frequency-dependent linear circuit instead of the plain resistor. The approach has previously been experimentally tested with a simple SFQ comparator. In this paper we perform experiments with a full RSFQ circuit, and thus conclude that in terms of stable operation the approach is applicable to scalable RSFQ circuits. Realization and optimization issues are also discussed.

    KW - Josephson junction

    U2 - 10.1088/1367-2630/9/5/157

    DO - 10.1088/1367-2630/9/5/157

    M3 - Article

    VL - 9

    JO - New Journal of Physics

    JF - New Journal of Physics

    SN - 1367-2630

    M1 - 157

    ER -