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Control of single electron charge-spin-phonon dynamics in the terahertz frequency range

Research Project

Project/Area Number 17H02732
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Nanostructural physics
Research InstitutionTohoku Institute of Technology

Principal Investigator

Shibata Kenji  東北工業大学, 工学部, 准教授 (00436578)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2017: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Keywords量子ドット / トランジスタ / テラヘルツ / スピン軌道相互作用 / 量子井戸 / 量子ポイントコンタクト / 電気伝導 / テラヘルツ電磁波 / トンネル効果
Outline of Final Research Achievements

Electrical manipulation and read-out of quantum states in zero-dimensional quantum dots (QDs) by nanogap metal electrodes is expected to bring about innovation in quantum information processing. In this study, we fabricated single QD transistors for the manipulation of single spin states in the terahertz frequency range. Narrow gap III-V compound semiconductors, such as InAs, InSb, and GaSb are used as the QD material in order to utilize the strong spin-orbit interaction in them. We also demonstrated the electrical modulation of conductance in the metal quantum point contacts for the electrical readout of the quantum states in the fabricated QD transistors. These works are opening a way for novel quantum information applications on QD systems.

Academic Significance and Societal Importance of the Research Achievements

単一の自己組織化量子ドットを用いた量子情報処理デバイスにおいて、1つの電子やスピン、光子に情報機能を持たせるための研究をおこなった。特に、テラヘルツ光による単一スピンの高速回転を実現するために、強いスピン軌道相互作用を有するInAsやInSb、GaSbなどの半導体を用いた単一量子ドットトランジスタの作製に関する研究を行うと同時に、その量子状態の検出のために用いる高感度電荷検出器の実現に関する研究を行った。
本研究の成果は、テラヘルツ光による高速な単一電荷・スピン・フォノンの制御とそれによる情報機能の創製を行う試みであり、未開拓の周波数帯であるテラヘルツ帯での量子情報処理への貢献が期待できる。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (31 results)

All 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (20 results) (of which Int'l Joint Research: 6 results) Remarks (4 results)

  • [Int'l Joint Research] ETH Zurich(スイス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ETH Zurich(スイス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Northern Illinois University(米国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Magnetotransport of electrically induced two-dimensional hole gases in undoped GaSb quantum wells2020

    • Author(s)
      Kenji Shibata, Matija Karalic, Christopher Mittag, Thomas Tschirky, Christian Reichl, Hiromu Ito, Katsushi Hashimoto, Toru Tomimatsu, Yoshiro Hirayama, Werner Wegscheider, Thomas Ihn, and Klaus Ensslin
    • Journal Title

      Phys. Rev. Research

      Volume: 2 Issue: 3

    • DOI

      10.1103/physrevresearch.2.033383

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Electric-field-induced two-dimensional hole gas in undoped GaSb quantum wells2019

    • Author(s)
      K. Shibata, M. Karalic, C. Mittag, T. Tschirky, C. Reichl, H. Ito, K. Hashimoto, T. Tomimatsu, Y. Hirayama, W. Wegscheider, T. Ihn, K. Ensslin
    • Journal Title

      Applied Physics Letters

      Volume: 114 Issue: 23 Pages: 232102-232102

    • DOI

      10.1063/1.5093133

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gate-tunable electronic transport in p-type GaSb quantum wells2019

    • Author(s)
      M. Karalic, C. Mittag, M. Hug, T. Tschirky, W. Wegscheider, K. Ensslin, T. Ihn, K. Shibata, and R. Winkler
    • Journal Title

      Physical Review B

      Volume: 99 Issue: 11

    • DOI

      10.1103/physrevb.99.115435

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electric-field control of conductance in metal quantum point contacts by electric-double-layer gating2017

    • Author(s)
      K. Shibata, K. Yoshida, K. Daiguji, H. Sato, T. Ii, and K. Hirakawa
    • Journal Title

      Applied Physics Letters

      Volume: 111 Issue: 15 Pages: 153104-153104

    • DOI

      10.1063/1.4995318

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] トップゲート構造を有する単一InSb量子ドットトランジスタの作製と評価2021

    • Author(s)
      小野寺碧、夏目大成、柴田憲治
    • Organizer
      令和3年東北地区若手研究者研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 金属ナノ接合の微細化と伝導度のゲート変調2021

    • Author(s)
      佐々木尚人、斎藤大我、柴田憲治
    • Organizer
      令和3年東北地区若手研究者研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] C60フラーレンを用いた単一分子トランジスタの作製2021

    • Author(s)
      佐々木和希、細川玲央、柴田憲治
    • Organizer
      令和3年東北地区若手研究者研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 電荷検出器への応用に向けた金属ナノ接合の微細化と伝導特性制御2021

    • Author(s)
      柴田憲治、佐々木尚人、斉藤大我、大塚朋廣、平川一彦
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Electric-field-induced two-dimensional hole gas in undoped GaSb quantum wells2020

    • Author(s)
      K. Shibata, M. Karalic, C. Mittag, T. Tschirky, C. Reichl, H. Ito, K. Hashimoto, T. Tomimatsu, Y. Hirayama, W. Wegscheider, T. Ihn, and K. Ensslin
    • Organizer
      The 4th International Symposium for The Core Research Cluster for Spintronics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 単一InSb量子ドットトランジスタの作製と伝導特性評価2020

    • Author(s)
      小野拓夢、小川善嵩、柴田憲治
    • Organizer
      令和2年東北地区若手研究者研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 強磁性Niナノ接合の微細化とトンネル磁気抵抗の観測2020

    • Author(s)
      栗村滉、木村冬威、柴田憲治
    • Organizer
      令和2年東北地区若手研究者研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高感度電荷検出器への応用に向けた金属ナノ接合の微細化と伝導特性制御2020

    • Author(s)
      門脇智也、佐々木聖哉、柴田憲治
    • Organizer
      令和2年東北地区若手研究者研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 通電断線によるPtナノ接合の作製とその伝導度の電界変調2020

    • Author(s)
      佐々木聖哉、小野拓夢、小川善嵩、柴田憲治
    • Organizer
      令和2年東北地区若手研究者研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Electric-field-induced two-dimensional hole gas in undoped GaSb quantum wells2019

    • Author(s)
      K. Shibata, M. Karalic, C. Mittag, T. Tschirky, C. Reichl, H. Ito, K. Hashimoto, T. Tomimatsu, Y. Hirayama, W. Wegscheider, T. Ihn, and K. Ensslin
    • Organizer
      The 21st International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (Edison 21)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ノンドープGaSb量子井戸における2次元ホール系の磁場中輸送特性2019

    • Author(s)
      柴田憲治, M. Karalic, C. Mittag, M. Hug, T. Tschirky, C. Reichl, 伊藤煕, 橋本克之, 冨松透, 平山祥郎, W. Wegscheider, T. Ihn, and K. Ensslin
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Two-dimensional hole transport in undoped GaSb quantum well2019

    • Author(s)
      K. Shibata, M. Karalic, C. Mittag, T. Tschirky, C. Reichl, H. Ito, K. Hashimoto, T. Tomimatsu, Y. Hirayama, W. Wegscheider, T. Ihn, and K. Ensslin
    • Organizer
      International Symposium on Hybrid Quantum Systems 2019 (HQS 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ノンドープGaSb量子井戸における2次元ホール系の輸送特性2019

    • Author(s)
      伊藤煕, 柴田憲治, M. Karalic, C. Mittag, T. Tschirky, C. Reichl, W. Wegscheider, T. Ihn, and K. Ensslin
    • Organizer
      第66回応用物理学会 春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] GaSb量子井戸における二次元ホール系の磁場中輸送特性2019

    • Author(s)
      柴田憲治, M. Karalic, C. Mittag, 伊藤煕, Z. Lei, T. Tschirky, C. Reichl, 橋本克之, 冨松透, 平山祥郎, W. Wegscheider, T. Ihn, K. Ensslin
    • Organizer
      日本物理学会 第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 単一InAs量子ドットトランジスタの磁場中電気伝導2019

    • Author(s)
      菊地竜太郎、斎藤康平、柴田憲治
    • Organizer
      平成31年東北地区若手研究者研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 電気化学反応を用いた金属ナノ接合の微細化と伝導度の電界変調2019

    • Author(s)
      箱崎涼、佐々木聡、柴田憲治
    • Organizer
      平成31年東北地区若手研究者研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ノンドープGaSb量子井戸における低温磁場中ホール伝導2019

    • Author(s)
      加藤春樹、伊藤熙、柴田憲治
    • Organizer
      平成31年東北地区若手研究者研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Magnetotransport of two-dimensional hole gas in undoped GaSb quantum well2018

    • Author(s)
      K. Shibata, M. Karalic, C. Mittag, Z. Lei, T. Tschirky, C. Reichl, W. Wegscheider, T. Ihn, and K. Ensslin
    • Organizer
      20th International Conference on Superlattices, Nanostructures and Nanodevices (ICSNN 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hole transport in p-type GaSb quantum wells2018

    • Author(s)
      M. Karalic, M. Hug, C. Mittag, Z. Lei, K. Shibata, T. Tschirky, W. Wegscheider, T. Ihn, K. Ensslin
    • Organizer
      34th International conference on the physics of semiconductors (ICPS2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electron transport through single self-assembled InSb quantum dots coupled to nanogap metal electrodes2017

    • Author(s)
      K. Shibata, M. Ohmori, K. Nagase, H. Sakaki, Y. Hirayama, and K. Hirakawa
    • Organizer
      The 44th International Symposium on Compound Semiconductors (ISCS2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 東北工業大学 工学部 電気電子工学科 柴田研究室ホームページ

    • URL

      http://www.eis.tohtech.ac.jp/~kshibata/index.html

    • Related Report
      2020 Annual Research Report
  • [Remarks] 東北工業大学 工学部 電気電子工学科 柴田研究室ホームページ

    • URL

      http://www.eis.tohtech.ac.jp/study/labs/shibata/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 東北工業大学 工学部 電気電子工学科 柴田研究室 ホームページ

    • URL

      http://www.eis.tohtech.ac.jp/study/labs/shibata/

    • Related Report
      2018 Annual Research Report
  • [Remarks] 東北工業大学 柴田研究室 ホームページ

    • URL

      http://www.eis.tohtech.ac.jp/study/labs/shibata/

    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2022-01-27  

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