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Superconducting qubits and current standard devices using self-duality

Research Project

Project/Area Number 20H02215
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21060:Electron device and electronic equipment-related
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

Kazumasa Makise  国立天文台, 先端技術センター, 准教授 (60363321)

Co-Investigator(Kenkyū-buntansha) 篠崎 文重  九州大学, 理学研究院, 名誉教授 (80117126)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Keywords超伝導ー絶縁体転移 / 量子位相すべり / 量子細線 / 超伝導 / 量子効果 / ナノ物理 / 超伝導デバイス / 位相すべり / 窒化物 / 超伝導薄膜 / 超伝導超薄膜 / ジョセフソン接合 / 自己双対 / 量子ビット / 電流量子標準
Outline of Research at the Start

本研究では超伝導量子細線でおきる量子位相すべりを用いて、高集積化への対応や応用範囲が拡大できる可能性を持つ超伝導量子素子を実現する。超伝導量子回路としてジョセフソントンネル接合が基本素子として用いられているが、集積規模や性能がジョセフソン接合のサイズに依存することが従来からボトルネックであった。そこで自己双対な関係によってジョセフソン接合と同様な動作でき、集積化に有利かつ異なる動作原理をもった超伝導ナノワイヤ素子による量子ビットと電流標準の実現に向けたデバイス開発と実証を行う。

Outline of Final Research Achievements

We studied transport properties in magnetic fields on series of niobium titanium nitride (NbTiN) nano structure, which is consist of nanowires and small islands. Corresponding to the enhancement of superconductivity as the nanostructures cross over from 2 dimensional thin films to 1 dimensional nanowires, we confirm a negative magnetoresistance and the increases of a critical current. From the temperature dependence resistance experiments, we observe resistive tails at low temperatures due to phase slip mechanisms originate from nanowire parts. Additionally we also observed Little-Parks oscillation like behavior for nanowire with island structure. This means coexistence of two different phases of superconducting order parameter.As a result, this structure shows the possibility of application to quantum devices even with a single-layer film.

Academic Significance and Societal Importance of the Research Achievements

超伝導量子コンピュータの集積回路を構成する基本素子はジョセフソン接合と呼ばれる薄い絶縁体を超伝導体で挟んだトンネル接合である。回路として動作させるには配線層やグランドプレーン、絶縁層が必要なため、構造によっては10層程度の積層構造になり、回路を作製するために高度なプロセス技術が必要である。そこでジョセフソン接合に依存しない単層膜による集積化を実現し、超伝導量子回路の集積化を飛躍的に向上させる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (20 results)

All 2023 2022 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results)

  • [Journal Article] Development of Superconducting Devices Supporting Radio Astronomy2021

    • Author(s)
      UZAWA Yoshinori、KROUG Matthias、KOJIMA Takafumi、TAKEDA Masanori、MAKISE Kazumasa、EZAKI Shohei、SHAN Wenlei、MIYACHI Akihira、FUJII Yasunori、TERAI Hirotaka
    • Journal Title

      IEICE Transactions on Electronics

      Volume: E104.C Issue: 9 Pages: 411-421

    • DOI

      10.1587/transele.2020SUI0003

    • NAID

      130008082177

    • ISSN
      0916-8524, 1745-1353
    • Year and Date
      2021-09-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Thermal management of a 3D packaging structure for superconducting quantum annealing machines2021

    • Author(s)
      Feng Wei、Kikuchi Katsuya、Hidaka Mutsuo、Yamamori Hirotake、Araga Yuuki、Makise Kazumasa、Kawabata Shiro
    • Journal Title

      Applied Physics Letters

      Volume: 118 Issue: 17 Pages: 174004-174004

    • DOI

      10.1063/5.0039822

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrogen-impurity-induced conductance peaks in constriction type Josephson junctions2021

    • Author(s)
      Miyakawa Kazuki、Takata Hiroki、Yamaguchi Taishi、Inagaki Yuji、Makise Kazumasa、Kawae Tatsuya
    • Journal Title

      Applied Physics Express

      Volume: 15 Issue: 1 Pages: 013002-013002

    • DOI

      10.35848/1882-0786/ac42ff

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optical and Tunneling Studies of Energy Gap in Superconducting Niobium Nitride Films2020

    • Author(s)
      Y. Uzawa, S. Saito, W. Qiu, K. Makise, T. Kojima, and Z. Wang
    • Journal Title

      Journal of Low Temperature Physics

      Volume: 199 Issue: 1-2 Pages: 143-148

    • DOI

      10.1007/s10909-019-02324-1

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] SISミキサ増幅器励起用100 GHz帯ジョセフソンアレイ発振器2023

    • Author(s)
      川上 彰、鵜澤 佳徳、牧瀬 圭正
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 2030年代のミリ波サブミリ波電波天文学に向けたSISデバイスの研究と高感度受信機の開発2023

    • Author(s)
      小嶋崇文 牧瀬圭正 江崎翔平 田村友範 宮地晃平 単文磊 金子慶子 坂井了 今田大皓 上水和典 増井翔 鵜澤佳徳
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Nbバッファ層を用いた超伝導Ta膜のマイクロ波特性評価2023

    • Author(s)
      浦出芳郎 薬師寺啓 辻本学 山田隆宏 牧瀬圭正 水林亘 猪股邦宏
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 超伝導磁束量子ビットを利用したInterconnectionにおける結合調整に関する検討2023

    • Author(s)
      才田大輔 牧瀬圭正 日高睦夫
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 周波数コンバータを用いたマイクロ波帯アイソレータの原理確認実験2022

    • Author(s)
      増井翔 小嶋崇文 牧瀬 圭正 小川英夫 大西利和 鵜澤佳徳
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 超伝導量子コンピュータの社会実装に向けた量子回路の集積化技術~材料開発および3次元実装について~2022

    • Author(s)
      牧瀬圭正
    • Organizer
      56th IEEE EPS Japan Chapter Evening Meeting
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Development of an SIS Mixer-based Low-noise Am-plifier Amenable to Josephson Oscillator Pumping2022

    • Author(s)
      Y. Uzawa, T. Kojima, K. Makise, A. Kawakami, Y. Kozuki, S. Masui, and W. Shan
    • Organizer
      Applied Superconductivity Conference 2022 (ASC2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Proof of Concept Experiment on a Wideband Microwave Gyrator with Two Superconductor Insulator Superconductor-Based Mixers2022

    • Author(s)
      Sho Masui; Takafumi Kojima; Yoshinori Uzawa; Kazumasa Makise; Hideo Ogawa; Toshikazu Onishi
    • Organizer
      Applied Superconductivity Conference 2022 (ASC2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Asymmetric behavior of weak magnetic fields in nitride superconducting nanowires2022

    • Author(s)
      K. Makise
    • Organizer
      29th International Conference on Low Temperature Physics(LT29)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nitrogen Dependence of Superconducting Properties in MoReN thin films2022

    • Author(s)
      Fusao Ichikawa, Hiroki Takeda, Kohei Matsuo, Kazumasa Makise, Bunju Shinozaki
    • Organizer
      29th International Conference on Low Temperature Physics(LT29)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 3D packaging technology for superconducting circuits2022

    • Author(s)
      Kazumasa Makise
    • Organizer
      The 35th International Symposium on Superconductivity (ISS2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 量子アニーリングにおける単位格子間接続用量子ビットの動作検討2022

    • Author(s)
      才田 大輔、日高 睦夫、牧瀬 圭正、平山 文紀、山梨 裕希
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 25kA/cm2 Nb/Al/AlOx/Al/Nb接合を用いた単一磁束量子シフトレジスタの170GHz動作2022

    • Author(s)
      田中 雅光、山下 太郎、藤巻 朗、牧瀬 圭正、永沢 秀一、日高 睦夫
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 超伝導量子細線の位相すべり現象とデバイス開発2021

    • Author(s)
      牧瀬 圭正
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Siスピン量子ビット測定に適した超伝導増幅器の試作と評価2021

    • Author(s)
      小林嵩, 牧瀬圭正, 永沢秀一, 日高睦夫, 武田健太, 野入亮人, 中島峻, 樽茶清悟
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ミリ波アイソレータを用いたSIS増幅器のマイクロ波性能2021

    • Author(s)
      小嶋 崇文、鵜澤 佳徳、上月 雄人、藤井 泰範、牧瀬 圭正、単 文磊
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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