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Quantum entanglement by chemical bond cleavage

Research Project

Project/Area Number 21K18867
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 28:Nano/micro science and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Sugimoto Yoshiaki  東京大学, 大学院新領域創成科学研究科, 教授 (00432518)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords走査プローブ顕微鏡
Outline of Research at the Start

量子もつれ状態とは、全体の量子状態が部分系の量子状態の積で表せない状態である。量子もつれ状態にある2つのスピンは、その距離がどれだけ離れていても相関が保たれる。このような非局所相関の存在は量子力学の最も驚くべき帰結である。量子もつれは基本問題として重要であるだけなく、量子通信や量子コンピュータ-への応用にも期待されている。今回、固体に吸着した2つの原子の化学結合を開裂させて、量子もつれ状態を生成できることを検証する。原子間力顕微鏡を用いて、針先端の原子と表面の原子を化学結合させ、それを開裂することによって、量子もつれを生成する。

Outline of Final Research Achievements

To detect quantum entanglement generated by the cleavage of chemical bonds, it is necessary to access the single spin of individual atoms adsorbed on solid substrates. We have studied the spin states of oxygen molecules physisorbed on metal surface from the arrangement of oxygen molecules. It was found that the arrangements can be classified into those that interact strongly with the surface and those that interact weakly, and the shortest distance of the oxygen molecules suggests an antiferromagnetic order. Furthermore, we investigated the unpaired electrons of silicon atoms and confirmed that silicon atoms with different bonding angles from those of silicon single crystals can be prepared.

Academic Significance and Societal Importance of the Research Achievements

シリコンは現在の半導体技術の中核を担う重要な物質である。ありふれた材料であるシリコンでも表面構造を工夫する余地があることがわかった。シリコンの単層膜を利用することによって、シリコンの単結晶とは異なる活性度を有するシリコン原子を表面に配列することができることが判明した。今後、シリコンの高次な表面構造や低次元性を活かしたデバイスへ展開できる可能性がある。原子間力顕微鏡による原子レベルの高分解能観察と化学状態分析の機能自体も様々な用途に波及していくと考えられる。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (21 results)

All 2022 2021 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (19 results) (of which Int'l Joint Research: 7 results,  Invited: 4 results) Remarks (1 results)

  • [Journal Article] Lattice distortion of oxygen monolayer on Ag(111) observed by scanning probe microscopy2022

    • Author(s)
      Kimura Mitsuo、Sugimoto Yoshiaki
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 11 Pages: 115432-115432

    • DOI

      10.1103/physrevb.106.115432

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] 走査プローブ顕微鏡によるAg(111)上の酸素分子単層膜の格子歪みの解析2022

    • Author(s)
      木村光男, 杉本宜昭
    • Organizer
      日本物理学会2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 走査プローブ顕微鏡による局所構造解析2022

    • Author(s)
      杉本宜昭
    • Organizer
      2022年度野口遵研究助成金講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 走査プローブ顕微鏡によるAg(111)上の酸素分子単層低密度相の格子歪みの評価2022

    • Author(s)
      木村光男, 杉本宜昭
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 強磁場低温プローブ顕微鏡を用いたIr(001)上の一次元鉄チェーンの観察2022

    • Author(s)
      安達有輝, 飯山敦司, 安井勇気, 杉本宜昭
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 超高真空原子間力顕微鏡を用いた局所構造解析2022

    • Author(s)
      杉本宜昭
    • Organizer
      合同ミニカンファレンスNanospecFY2022mini
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Probing the spin orientation in Fe chains using non-contact atomic force microscopy2022

    • Author(s)
      Yuuki Adachi, Yuuki Yasui, Yoshiaki Sugimoto
    • Organizer
      The 22nd International Vacuum Congress (IVC-22)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Atomic Force Microscopy for Oxygen-Induced Surface of Nb(110)2022

    • Author(s)
      Yuuki Yasui, Yoshiaki Sugimoto
    • Organizer
      The 22nd International Vacuum Congress (IVC-22)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Lattice distortion in oxygen monolayers imaged by scanning probe microscopy2022

    • Author(s)
      Mitsuo Kimura, Yoshiaki Sugimoto
    • Organizer
      The 22nd International Vacuum Congress (IVC-22)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 原子間力顕微鏡を用いた単原子分子の計測と操作技術の開発2022

    • Author(s)
      杉本宜昭
    • Organizer
      日本顕微鏡学会 第78回学術講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] High resolution imaging of individual molecules using atomic force microscopy2021

    • Author(s)
      Y. Sugimoto
    • Organizer
      Pacifichem2021: A Creative Vision for the Future”
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Structure analysis of oxygen layer on Ag(111) by scanning probe microscopy2021

    • Author(s)
      M. Kimura and Y. Sugimoto
    • Organizer
      The 9th International Symposium on Surface Science (ISSS9)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Manipulation of C60 molecules on Ag(111) by non-contact atomic force microscopy2021

    • Author(s)
      L. Feng, T. Iizuka, Y. Yasui, and Y. Sugimoto
    • Organizer
      The 9th International Symposium on Surface Science (ISSS9)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Characterization of nitric oxide molecules on copper nitride using scanning probe microscopy2021

    • Author(s)
      R. Zhang, M. Fukuda, T. Ozaki, and Y. Sugimoto
    • Organizer
      The 9th International Symposium on Surface Science (ISSS9)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] AFM力センサーの動的ばね定数における探針質量効果2021

    • Author(s)
      倉橋輝, 杉本宜昭
    • Organizer
      2021年日本表面真空学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Ag(111)上の高密度O2単分子層の原子間力顕微鏡観察2021

    • Author(s)
      木村光男, 杉本宜昭
    • Organizer
      2021年日本表面真空学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Manipulation of nitric oxide molecule by attractive force using scanning probe microscopy2021

    • Author(s)
      張潤楠, 福田将大, 尾崎泰助, 杉本宜昭
    • Organizer
      2021年日本表面真空学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Investigation of Low-dimensional Si Structures on Ag(111) by Scanning Probe Microscopy2021

    • Author(s)
      馮凌瑜, 籔押慶祐, 小野田穣, 塩足亮隼, 福田将大, 尾崎泰助, 杉本宜昭
    • Organizer
      2021年日本表面真空学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] New One-Dimensional Structure of Si Allotrope on Ag(111)2021

    • Author(s)
      L. Feng, A. Shiotari, K. Yabuoshi, M. Fukuda, T. Ozaki, and Y. Sugimoto
    • Organizer
      第82回応用物理学会 秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 電気化学反応による原子間力顕微鏡の探針再生2021

    • Author(s)
      小野田穣, 長谷川 剛, 杉本宜昭
    • Organizer
      第82回応用物理学会 秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Remarks] 研究室HP

    • URL

      http://www.afm.k.u-tokyo.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Research-status Report

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Published: 2021-07-13   Modified: 2024-01-30  

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