A flux-driven Josephson parametric amplifier for sub-GHz frequencies fabricated with side-wall passivated spacer junction technology

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    We present experimental results for a Josephson parametric amplifier tailored for readout of ultra-sensitive thermal microwave detectors. In particular, we discuss the impact of fabrication details on the performance. We show that the small volume of deposited dielectric materials enabled by the side-wall passivated spacer niobium junction technology leads to robust operation across a wide range of operating temperatures up to 1.5 K. The flux-pumped amplifier has gain in excess of 20 dB in three-wave mixing and its center frequency is tunable between 540-640 MHz. At 600 MHz, the amplifier adds 105 mK 9 mK of noise, as determined with the hot/cold source method. Phase-sensitive amplification is demonstrated with the device.

    LanguageEnglish
    Article number105001
    JournalSuperconductor Science and Technology
    Volume31
    Issue number10
    DOIs
    Publication statusPublished - 24 Aug 2018
    MoE publication typeNot Eligible

    Fingerprint

    Niobium
    Parametric amplifiers
    parametric amplifiers
    spacers
    Amplification
    amplifiers
    Microwaves
    Fluxes
    Detectors
    Fabrication
    operating temperature
    niobium
    readout
    microwaves
    Temperature
    fabrication
    detectors
    Hot Temperature

    Keywords

    • Josephson junction
    • parametric amplifier
    • SQUID array

    OKM Publication Types

    • A1 Refereed journal article

    OKM Open Access Status

    • 0 Not Open Access

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Condensed Matter Physics
    • Metals and Alloys
    • Electrical and Electronic Engineering
    • Materials Chemistry

    Cite this

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    title = "A flux-driven Josephson parametric amplifier for sub-GHz frequencies fabricated with side-wall passivated spacer junction technology",
    abstract = "We present experimental results for a Josephson parametric amplifier tailored for readout of ultra-sensitive thermal microwave detectors. In particular, we discuss the impact of fabrication details on the performance. We show that the small volume of deposited dielectric materials enabled by the side-wall passivated spacer niobium junction technology leads to robust operation across a wide range of operating temperatures up to 1.5 K. The flux-pumped amplifier has gain in excess of 20 dB in three-wave mixing and its center frequency is tunable between 540-640 MHz. At 600 MHz, the amplifier adds 105 mK 9 mK of noise, as determined with the hot/cold source method. Phase-sensitive amplification is demonstrated with the device.",
    keywords = "Josephson junction, parametric amplifier, SQUID array",
    author = "Slawomir Simbierowicz and Visa Vesterinen and Leif Gr{\"o}nberg and Janne Lehtinen and Mika Prunnila and Juha Hassel",
    year = "2018",
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    T1 - A flux-driven Josephson parametric amplifier for sub-GHz frequencies fabricated with side-wall passivated spacer junction technology

    AU - Simbierowicz, Slawomir

    AU - Vesterinen, Visa

    AU - Grönberg, Leif

    AU - Lehtinen, Janne

    AU - Prunnila, Mika

    AU - Hassel, Juha

    PY - 2018/8/24

    Y1 - 2018/8/24

    N2 - We present experimental results for a Josephson parametric amplifier tailored for readout of ultra-sensitive thermal microwave detectors. In particular, we discuss the impact of fabrication details on the performance. We show that the small volume of deposited dielectric materials enabled by the side-wall passivated spacer niobium junction technology leads to robust operation across a wide range of operating temperatures up to 1.5 K. The flux-pumped amplifier has gain in excess of 20 dB in three-wave mixing and its center frequency is tunable between 540-640 MHz. At 600 MHz, the amplifier adds 105 mK 9 mK of noise, as determined with the hot/cold source method. Phase-sensitive amplification is demonstrated with the device.

    AB - We present experimental results for a Josephson parametric amplifier tailored for readout of ultra-sensitive thermal microwave detectors. In particular, we discuss the impact of fabrication details on the performance. We show that the small volume of deposited dielectric materials enabled by the side-wall passivated spacer niobium junction technology leads to robust operation across a wide range of operating temperatures up to 1.5 K. The flux-pumped amplifier has gain in excess of 20 dB in three-wave mixing and its center frequency is tunable between 540-640 MHz. At 600 MHz, the amplifier adds 105 mK 9 mK of noise, as determined with the hot/cold source method. Phase-sensitive amplification is demonstrated with the device.

    KW - Josephson junction

    KW - parametric amplifier

    KW - SQUID array

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    JO - Superconductor Science and Technology

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