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Theoretical study on spin current control of cold atoms

Research Project

Project/Area Number 18K03493
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
Research InstitutionTokyo Metropolitan University

Principal Investigator

Mori Hiroyuki  東京都立大学, 理学研究科, 教授 (60220018)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords冷却原子 / 混合系 / ボーズ・フェルミ混合系 / スピン流 / 深層学習 / 機械学習 / 量子モンテカルロシミュレーション / 量子力学的粒子 / 相転移 / ニューラルネットワーク / 冷却原子気体 / ボーズ原子 / フェルミ原子 / スピン軌道相互作用 / ボルツマンマシン / 非対角閉じ込め / 混合原子系 / ボーズフェルミ混合系
Outline of Final Research Achievements

When only the Bose atoms in a Bose-Fermi mixture system have spin-orbit interactions, the spins of the Bose atoms form a spiral structure. Since the spin current of Fermi atoms was expected to be generated against the background of this spin structure, an analysis of the spin current using the nonequilibrium Green's function revealed that the spin current of Fermi atoms has a peak structure when the wavenumber of the laser applied to the system to create an artificial SOC is changed. Furthermore, we explored analysis methods by machine learning and proposed several novel methods for spin systems as a test case, which led us to a new path for mixed systems.

Academic Significance and Societal Importance of the Research Achievements

スピントロニクスに代表されるような、スピン流に着目した研究が固体物理では盛んであるが、同様の視点を冷却原子系に持ち込むことで、新たな分野開拓につながると考える。
また、その過程で生じた相図特定の困難な点については、機械学習・深層学習を応用するというこれまでにないアプローチを考案した。スピン系に対する予備的研究が成功したことから、量子力学的粒子系の解析にも機械学習が有効であると考えられる。これは理論計算における解析計算、数値計算に続く第3の手法として、今後の新たな発展が期待できる。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (20 results)

All 2023 2021 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (11 results) (of which Int'l Joint Research: 3 results) Book (1 results)

  • [Int'l Joint Research] Bioinformatics Institute(シンガポール)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Image Preparation for Machine-Learning Analysis of Multiple-Size Spin Systems2021

    • Author(s)
      Sakamoto Akimichi, Shiina Kenta, Mori Hiroyuki
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 90 Issue: 6 Pages: 065001-065001

    • DOI

      10.7566/jpsj.90.065001

    • NAID

      210000159078

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Inverse renormalization group based on image super-resolution using deep convolutional networks2021

    • Author(s)
      Shiina Kenta、Mori Hiroyuki、Tomita Yusuke、Lee Hwee Kuan、Okabe Yutaka
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 9617-9617

    • DOI

      10.1038/s41598-021-88605-w

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Machine-Learning Studies on Spin Models2020

    • Author(s)
      Kenta Shiina, Hiroyuki Mori, Yutaka Okabe, Hwee Kuan Lee
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 2177-2177

    • DOI

      10.1038/s41598-020-58263-5

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of line tension on axisymmetric nanoscale capillary bridges at the liquid-vapor equilibrium2019

    • Author(s)
      Masao Iwamatsu and Hiroyuki Mori
    • Journal Title

      Phys. Rev. E

      Volume: 100 Issue: 4 Pages: 042802-042802

    • DOI

      10.1103/physreve.100.042802

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Three Sound Modes in a Bose-Fermi Superfluid Mixture at Finite Temperatures2019

    • Author(s)
      Yosuke Ono, Rei Hatsuda, Kenta Shiina, Hiroyuki Mori, and Emiko Arahata
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 88 Issue: 3 Pages: 034003-034003

    • DOI

      10.7566/jpsj.88.034003

    • NAID

      40021839100

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spin Current of Fermions Induced in Spin Orbit Coupled Bose-Fermi Mixture2018

    • Author(s)
      Ryohei Sakamoto, Yosuke Ono, Emiko Arahata, and Hiroyuki Mori
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 87 Issue: 7 Pages: 074004-074004

    • DOI

      10.7566/jpsj.87.074004

    • NAID

      40021595089

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Bose-Fermi Mixtures in Off-diagonal Confinement2018

    • Author(s)
      Kenta Shiina, Emiko Arahata, and Hiroyuki Mori
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 87 Issue: 12 Pages: 125002-125002

    • DOI

      10.7566/jpsj.87.125002

    • NAID

      130007648733

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 機械学習による世界線画像判別に基づいた相転移現象の数値解析2023

    • Author(s)
      坂本晟学, 森弘之
    • Organizer
      日本物理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Flow-based modelを用いたスピン状態の超解像2021

    • Author(s)
      椎名拳太, Hwee Kuan Lee,森弘之
    • Organizer
      日本物理学会第76回年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 機械学習による2次元古典スピン系相転移現象の数値解析2021

    • Author(s)
      坂本晟学, 森弘之
    • Organizer
      日本物理学会第76回年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Flow-based modelによる古典スピン系の解析2020

    • Author(s)
      椎名拳太, Hwee Kuan Lee,森弘之,
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] ミクロカノニカル純粋状態の制限ボルツマンマシンによる生成2020

    • Author(s)
      高橋岳志, 椎名拳太, 森弘之
    • Organizer
      日本物理学会2020年3月第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Solving Schrodinger equation by Machine Learning with support of Perturbation theory2019

    • Author(s)
      Kenta Shiina, Hiroyuki Mori, Yutaka Okabe, Hwee Kuan Lee
    • Organizer
      Deep Learning and Physics DLAP 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] スピン軌道相互作用を持つ冷却原子系に対する異種原子の混合効果2019

    • Author(s)
      坂本良平, 荒畑恵美子, 森弘之
    • Organizer
      日本物理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 三次元光格子中ボーズ-フェルミ混合系の基底状態及び励起状態の解析II2019

    • Author(s)
      初田黎, 坂本良平, 小野洋輔, 椎名拳太, 森弘之, 荒畑恵美子
    • Organizer
      日本物理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] スピン・軌道角運動量結合したBECの回転スピン流2018

    • Author(s)
      坂本良平,荒畑恵美子,森弘之
    • Organizer
      日本物理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Spin current in spin-orbit coupled Bose- Fermi mixture2018

    • Author(s)
      Ryohei Sakamoto, Emiko Arahata, and Hiroyuki Mori
    • Organizer
      The 26th International Conference on Atomic Physics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Sound Propagation excited by Density Perturbation in a Bose-Fermi Mixture Superfluid at Finite Temperatures2018

    • Author(s)
      Yosuke Ono, Rei Hatsuda, Kenta Shiina, Hiroyuki Mori, and Emiko Arahata
    • Organizer
      The 26th International Conference on Atomic Physics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Book] 2つの粒子で世界がわかる2019

    • Author(s)
      森弘之
    • Total Pages
      240
    • Publisher
      講談社
    • ISBN
      4065160413
    • Related Report
      2019 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2024-01-30  

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