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A study of dynamical properties of Weyl fermions in matter

Research Project

Project/Area Number 16J04752
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Condensed matter physics II
Research InstitutionThe University of Tokyo

Principal Investigator

藤田 浩之  東京大学, 理学系研究科, 特別研究員(DC1)

Project Period (FY) 2016-04-22 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2018: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2017: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2016: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywordsトポロジカル光波 / 非平衡現象 / 光渦 / 機械学習 / 量子情報 / ワイルフェルミオン / カイラル反強磁性体
Outline of Annual Research Achievements

本年度発表した5本の論文について、以下にそれぞれ内容を記載する。
1.量子多体系のエンタングルメント・エントロピーの体積則に現れる普遍的な構造について昨年度発表した論文がNature Comm.誌から出版された。また、本研究に関連した内容についてより解析的な議論を行った論文をJournal of High energy physics誌から出版している。
2.トポロジカルな光の一種であるCylindrical vector beamを利用し、量子振動によるフェルミ面測定を非平衡に拡張する手法を提案した。本手法により、従来困難であった局在磁気モーメントが磁気秩序をなしているような磁性金属のフェルミ面を測定することが可能になり、磁場誘起の金属絶縁体転移などをより詳細に調べることが可能になると期待される。本研究に関する論文はScientific Reports誌からすでに出版されている。
3.古典周期駆動系に対してFloquetの定理を利用した解析を行う方法を提案する論文を発表した。高周波レーザー駆動下の磁性体の古典ダイナミクスの解析に利用可能であり、古典系の非平衡状態のFloquet engineeringの可能性を提示している。
4.Cylindrical vector beamの特異な集光特性を物質の磁気的な性質を選択的に駆動する、ないし観測することを提案する論文を発表した。本研究で提案した手法により、伝導体の電子スピン共鳴現象や反強磁性半導体の磁気共鳴現象の観測が可能になると期待される。
5.Entanglement negativityのsmooth quench下でのダイナミクスを系統的に調べた論文を発表した。すでに知られているfast quenchでのダイナミクスの研究と合わせ、多体系における量子情報量の動的な性質の解明に資するものである。

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (29 results)

All 2018 2017 2016 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 5 results,  Acknowledgement Compliant: 2 results) Presentation (19 results) (of which Int'l Joint Research: 13 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] Page curves for general interacting systems2018

    • Author(s)
      Fujita Hiroyuki、Nakagawa Yuya O.、Sugiura Sho、Watanabe Masataka
    • Journal Title

      Journal of High Energy Physics

      Volume: 2018 Issue: 12

    • DOI

      10.1007/jhep12(2018)112

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonequilibrium Magnetic Oscillation with Cylindrical Vector Beams2018

    • Author(s)
      Fujita Hiroyuki、Sato Masahiro
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1

    • DOI

      10.1038/s41598-018-33651-0

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Universality in volume-law entanglement of scrambled pure quantum states2018

    • Author(s)
      Yuya O.Nakagawa、Masataka Watanabe、Hiroyuki Fujita、Sho Sugiura*
    • Journal Title

      Nature Communications

      Volume: 9 Issue: 1 Pages: 1635-1635

    • DOI

      10.1038/s41467-018-03883-9

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Construction of Hamiltonians by supervised learning of energy and entanglement spectra2018

    • Author(s)
      Fujita Hiroyuki、Nakagawa Yuya O.、Sugiura Sho、Oshikawa Masaki
    • Journal Title

      Physical Review B

      Volume: 97 Issue: 7 Pages: 075114-075114

    • DOI

      10.1103/physrevb.97.075114

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Designing Kitaev Spin Liquids in Metal-Organic Frameworks2017

    • Author(s)
      Yamada Masahiko G.、Fujita Hiroyuki、Oshikawa Masaki
    • Journal Title

      Physical Review Letters

      Volume: 119 Issue: 5 Pages: 057202-057202

    • DOI

      10.1103/physrevlett.119.057202

    • NAID

      130006246717

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Encoding orbital angular momentum of light in magnets2017

    • Author(s)
      Fujita Hiroyuki、Sato Masahiro
    • Journal Title

      Physical Review B Rapid Communication

      Volume: 96 Issue: 6 Pages: 060407-060407

    • DOI

      10.1103/physrevb.96.060407

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrafast generation of skyrmionic defects with vortex beams: Printing laser profiles on magnets2017

    • Author(s)
      Hiroyuki Fujita and Masahiro Sato
    • Journal Title

      Phys. Rev. B

      Volume: 95 Issue: 5 Pages: 054421-054421

    • DOI

      10.1103/physrevb.95.054421

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fractional quantum Hall states of dipolar fermions in a strained optical lattice2016

    • Author(s)
      H. Fujita, Y. O. Nakagawa, Y. Ashida, and M. Ueda
    • Journal Title

      Physical Review A

      Volume: 94 Issue: 4 Pages: 043641-043641

    • DOI

      10.1103/physreva.94.043641

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Field-free, spin-current control of magnetization in non-collinear chiral antiferromagnets2016

    • Author(s)
      Hiroyuki Fujita
    • Journal Title

      Physica Status Solidi RRL

      Volume: 11 Issue: 4 Pages: 1600360-1600360

    • DOI

      10.1002/pssr.201600360

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] everse engineering Hamiltonian from spectrum2018

    • Author(s)
      Hiroyuki Fujita
    • Organizer
      Deep Learning and Physics
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Reverse engineering Hamiltonian from spectrum2018

    • Author(s)
      Hiroyuki Fujita
    • Organizer
      Tsinghua Workshop on Machine Learning in Geometry and Physics 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Reverse engineering Hamiltonian from spectrum2018

    • Author(s)
      Hiroyuki Fujita
    • Organizer
      The FOR 1807 Winter School on Numerical Methods for Strongly Correlated Quantum Systems
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ,カイラル磁性体への光渦空間構造の転写2017

    • Author(s)
      藤田浩之, 佐藤正宏
    • Organizer
      2017年日本物理学会年次大会
    • Place of Presentation
      大阪大学 (大阪府・吹田市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] Generating skyrmionic defects with optical vortex2017

    • Author(s)
      Hiroyuki Fujita and Masahiro Sato
    • Organizer
      Topological Phases and Functionality of Correlated Electron Systems
    • Place of Presentation
      Institute for Solid State Physics, the University of Tokyo, Kashiwa, Japan
    • Year and Date
      2017-02-20
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spintronic Control of Non-collinear Chiral AFMs2017

    • Author(s)
      Hiroyuki Fujita
    • Organizer
      Topological Phases and Functionality of Correlated Electron Systems
    • Place of Presentation
      Institute for Solid State Physics, the University of Tokyo, Kashiwa, Japan
    • Year and Date
      2017-02-20
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Generating skyrmionic defects with optical vortex2017

    • Author(s)
      Hiroyuki Fujita and Masahiro Sato
    • Organizer
      International School on Topological Science and Topological Matter
    • Place of Presentation
      Yukawa Institute for Theoretical Physics, Kyoto, Japan
    • Year and Date
      2017-02-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光の軌道角運動量による磁性体制御2017

    • Author(s)
      藤田浩之, 佐藤正宏
    • Organizer
      新学術領域研究「光圧ナノ物質操作」 第1回公開シンポジウム
    • Place of Presentation
      千葉大学 (千葉県・千葉市)
    • Year and Date
      2017-01-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] 光渦と磁性体の相互作用2017

    • Author(s)
      藤田浩之
    • Organizer
      SPring-8ユーザー共同体(SPRUC) コヒーレントX線物質科学研究会 第22回HiSOR研究会 合同研究会「光渦と原子分子・物質系の相互作用」
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Reconstructing Hamiltonians with machine learning of energy and entanglement spectrum2017

    • Author(s)
      Hiroyuki Fujita
    • Organizer
      Novel Quantum States 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Generating multiple skyrmionic defects with topological beams2017

    • Author(s)
      Hiroyuki Fujita
    • Organizer
      Strongly Correlated Electron Systems 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spintronic control of noncollinear Kagome antiferromagnets2017

    • Author(s)
      Hiroyuki Fujita
    • Organizer
      Strongly Correlated Electron Systems 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光渦を用いたトポロジカルなスピン構造の生成2016

    • Author(s)
      藤田浩之, 佐藤正宏
    • Organizer
      応用物理学会・量子エレクトロニクス研究会「光-物質相互制御 ~制御技術の進展と新しい物理の探求~」
    • Place of Presentation
      上智軽井沢セミナーハウス(長野県・井沢町)
    • Year and Date
      2016-12-08
    • Related Report
      2016 Annual Research Report
  • [Presentation] Fractional quantum Hall states of dipolar fermions in a strained optical lattice2016

    • Author(s)
      Hiroyuki Fujita, Yuya O. Nakagawa, Yuto Ashida, Shunsuke Furukawa
    • Organizer
      Designer Quantum Systems Out of Equilibrium
    • Place of Presentation
      Kavli Institute for Theoretical Physics, Santa Barbara, US
    • Year and Date
      2016-11-14
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fractional quantum Hall states of dipolar fermions in a strained optical lattice2016

    • Author(s)
      Hiroyuki Fujita, Yuya O. Nakagawa, Yuto Ashida, Shunsuke Furukawa
    • Organizer
      Topological Quantum Matter
    • Place of Presentation
      Kavli Institute for Theoretical Physics, Santa Barbara, US
    • Year and Date
      2016-10-17
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theory of vortex beam induced skyrmion duplex in chiral magnets2016

    • Author(s)
      Hiroyuki Fujita and Masahiro Sato,
    • Organizer
      Workshop on Antiferromagnetic Spintronics
    • Place of Presentation
      Univerisity of Mainz, Mainz, Germany
    • Year and Date
      2016-09-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] “"歪んだ"光格子における極性フェルミオン分子の分数量子ホール状態2016

    • Author(s)
      藤田浩之, 蘆田佑人、中川裕也、古川俊輔
    • Organizer
      2016年日本物理学会秋季大会
    • Place of Presentation
      金沢大学 (石川県・金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] Fractional Quantum Hall states of dipolar fermions in a strained optical lattice2016

    • Author(s)
      Hiroyuki Fujita, Yuya O. Nakagawa, Yuto Ashida, and Shunsuke Furukawa
    • Organizer
      ICMT summer school 2016: Introduction to topological phases of matter
    • Place of Presentation
      University of Illinois, Champaign, US
    • Year and Date
      2016-08-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fractional quantum Hall states of dipolar fermions in a strained optical lattice2016

    • Author(s)
      Hiroyuki Fujita, Yuya O. Nakagawa, Yuto Ashida, Shunsuke Furukawa
    • Organizer
      Quantum Matter, Spacetime and Information
    • Place of Presentation
      Yukawa Institute for Theoretical Physics, Kyoto, Japan
    • Year and Date
      2016-06-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 光渦レーザーを磁性体に超高速でプリントする方法を提案 ―理学部・佐藤正寛 准教授ら

    • URL

      http://www.ibaraki.ac.jp/news/2017/03/130937.html

    • Related Report
      2016 Annual Research Report

URL: 

Published: 2016-05-17   Modified: 2024-03-26  

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