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Development of a quantum simulator using nuclear spins

Research Project

Project/Area Number 25800230
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Atomic/Molecular/Quantum electronics
Research InstitutionOsaka University

Principal Investigator

KAGAWA Akinori  大阪大学, 基礎工学研究科, 助教 (70533701)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords量子シミュレーション / 磁気相転移 / 磁気共鳴 / 動的核偏極 / 核スピン / 電子スピン / 核磁気共鳴 / 電子スピン共鳴
Outline of Final Research Achievements

We have studied a quantum simulator for magnetic phase transitions using highly polarized nuclear spins. We applied two dynamic nuclear polarization (DNP) methods to polarize nuclear spins so that the nuclear spin temperature was cooled effectively. We have constructed a cavity, which can manipulate electron and nuclear spins efficiently below 1 K for DNP with unpaired electron spins at a thermal equilibrium state. As a result, fluorine in a fluorite crystal was polarized as high as 50% by DNP. We also obtained proton polarization of 34 % in a p-terphenyl crystal at room temperature using DNP with electron spins in the triplet states. Critical nuclear polarization to obtain magnetic phase transition in the p-terphenyl crystal was calculated using mean field theory. It is found that proton polarization of 26% is required at the magic angle between the molecular long axis and the direction of the static magnetic field to obtain ferromagnetic sandwich ordering.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (23 results)

All 2014 2013 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (18 results) (of which Invited: 1 results)

  • [Journal Article] Room-temperature hyperpolarization of nuclear spins in bulk2014

    • Author(s)
      K. Tateishi, M. Negoro, S. Nishida, A. Kagawa, Y. Morita, M. Kitagawa
    • Journal Title

      Proc. Natl. Acad. Sci.

      Volume: -

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Strongly driven electron spins using a Ku band stripline electron paramagnetic resonance resonator2013

    • Author(s)
      Y. S. Yap, H. Yamamoto, Y. Tabuchi, M. Negoro, A. Kagawa, M. Kitagawa
    • Journal Title

      J. Magn. Reson

      Volume: 232 Pages: 62-27

    • DOI

      10.1016/j.jmr.2013.04.015

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hyperpolarization of Thin Films with Dynamic Nuclear Polarization Using Photoexcited Triplet Electrons2013

    • Author(s)
      K. Tateishi, M. Negoro, A. Kagawa, T. Uesaka, M. Kitagawa
    • Journal Title

      J. Phys. Soc. Jpn

      Volume: 82 Issue: 8 Pages: 084005-084005

    • DOI

      10.7566/jpsj.82.084005

    • NAID

      210000132692

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Dynamic Nuclear Polarization with Photoexcited Triplet Electrons in a Glass Matrix2013

    • Author(s)
      K. Tateishi, M. Negoro, A. Kagawa, M. Kitagawa
    • Journal Title

      Angewandte Chemie Int. Ed

      Volume: 52 Issue: 50 Pages: 13307-13310

    • DOI

      10.1002/ange.201305674

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] 核スピン・電子スピン量子情報処理実験2013

    • Author(s)
      北川勝浩、香川晃徳、根来誠
    • Journal Title

      固体物理

      Volume: 48 Pages: 95-105

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Toward application of DNP using photo-excited triplet electrons2014

    • Author(s)
      Negoro Makoto, Kenichiro Tateishi, Shinsuke Nishida, Akinori Kagawa, Yasushi Morita, and Masahiro Kitagawa
    • Organizer
      APES-IES-SEST2014
    • Place of Presentation
      Todaiji culture center Nara prefectural new public hall, Nara, Japan
    • Year and Date
      2014-11-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] Arbitrary waveform pulse ESR at very low temperatures: Multiple Excitation using Phase-ramped Gaussian pulses2014

    • Author(s)
      Yung Szen Yap, Yutaka Tabuchi, Shuuhei Tanijima, Makoto Negoro, Akinori Kagawa, and Masahiro Kitagawa
    • Organizer
      APES-IES-SEST2014
    • Place of Presentation
      Todaiji culture center Nara prefectural new public hall, Nara, Japan
    • Year and Date
      2014-11-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] 光励起三重項状態の電子スピンを用いた動的核偏極(DNP)による室温超偏極技術2014

    • Author(s)
      根来誠、立石健一郎、西田辰介、香川晃徳、森田靖、北川勝浩
    • Organizer
      第42回日本磁気共鳴医学会大会
    • Place of Presentation
      ホテルグランヴィア京都
    • Year and Date
      2014-09-20
    • Related Report
      2014 Annual Research Report
  • [Presentation] 高偏極化した核スピン系での磁気相転移の量子シミュレーション2014

    • Author(s)
      香川晃徳、根来誠、北野崇博、立石健一郎、西田辰介、森田靖、丸山勲、北川勝浩
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学春日井キャンパス
    • Year and Date
      2014-09-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] 光励起三重項電子を用いたDNPによる 室温下での偏極率30%の達成

    • Author(s)
      立石健一郎, 根来誠, 西田辰介, 香川晃徳, 工位武治, 森田靖, 北川勝浩
    • Organizer
      第53回 固体NMR・材料フォーラム
    • Place of Presentation
      産業技術総合研究所 臨海新都心センター
    • Related Report
      2013 Research-status Report
  • [Presentation] 平均場近似によるp-ターフェニル結晶の 核磁気相転移の解析

    • Author(s)
      北野嵩博, 香川晃徳, 根来誠, 丸山勲, 北川勝浩
    • Organizer
      第28回量子情報技術研究会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 光励起三重項電子を用いた動的核偏極によって高偏極化された核スピン系における量子情報処理実験

    • Author(s)
      橋崎俊, 立石健一郎, 根来誠, 西田辰介, 香川晃徳, 森田靖, 北川勝浩
    • Organizer
      第28回量子情報技術研究会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Research-status Report
  • [Presentation] ESR量子コンピュータ実現に向けた 装置開発

    • Author(s)
      橋本侑樹, ヤップユンセン, 田渕豊, 加藤辰典, 山本洋史, 根来誠, 香川晃徳, 北川勝浩
    • Organizer
      第28回量子情報技術研究会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Research-status Report
  • [Presentation] DNP with photoexcited triplet electrons in glassy matrix

    • Author(s)
      K. Tateishi, M. Negoro, A. Kagawa, M. Kitagawa
    • Organizer
      4th international DNP Symposium
    • Place of Presentation
      Copenhagen, Denmark
    • Related Report
      2013 Research-status Report
  • [Presentation] 室温下での30%を超える 固体陽子スピン偏極

    • Author(s)
      立石健一郎,根来誠,西田辰介, 香川晃徳,森田靖,北川勝浩
    • Organizer
      日本物理学会 2013年秋季大会
    • Place of Presentation
      高知大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 極低温下(<1K)での 任意波形パルスESR実験

    • Author(s)
      根来誠, ヤップユンセン, 田渕豊 加藤辰典, 橋本侑樹, 香川晃徳, 北川勝浩
    • Organizer
      第52回電子スピンサイエンス学会年会
    • Place of Presentation
      大宮ソニックシティ
    • Related Report
      2013 Research-status Report
  • [Presentation] ESR量子コンピュータ実現に向けた 装置開発及びコンポジットパルスによるキュービットの正確な制御

    • Author(s)
      加藤辰典, ヤップユンセン, 橋本侑樹, 田渕豊, 根来誠, 香川晃徳, 北川勝浩
    • Organizer
      第52回電子スピンサイエンス学会年会
    • Place of Presentation
      大宮ソニックシティ
    • Related Report
      2013 Research-status Report
  • [Presentation] 光励起三重項電子スピンを用いた動的核偏極による室温下での1Hスピン 偏極率34%の達成

    • Author(s)
      立石健一郎, 根来誠, 西田辰介, 香川晃徳, 森田靖, 北川勝浩
    • Organizer
      第52回電子スピンサイエンス学会年会
    • Place of Presentation
      大宮ソニックシティ
    • Related Report
      2013 Research-status Report
  • [Presentation] 平均場近似を用いた 核磁気相転移の解析

    • Author(s)
      香川晃徳, 北野嵩博, 根来誠, 丸山勲, 北川勝浩
    • Organizer
      第52回NMR討論会
    • Place of Presentation
      石川県立音楽堂
    • Related Report
      2013 Research-status Report
  • [Presentation] 光励起三重項電子スピンを用いたDNPによる室温下での 偏極率34%の達成

    • Author(s)
      立石健一郎, 根来誠, 西田辰介, 香川晃徳, 森田靖, 北川勝浩
    • Organizer
      第52回NMR討論会
    • Place of Presentation
      石川県立音楽堂
    • Related Report
      2013 Research-status Report
  • [Presentation] Towards quantum simulation of magnetic phase transition using highly polarized nuclear spins

    • Author(s)
      A.Kagawa, T.Kitano, M.Negoro, I.Maruyama, M.Kitagawa
    • Organizer
      FIRST International Symposium on Topological Quantum Technology
    • Place of Presentation
      Tokyo, Japan
    • Related Report
      2013 Research-status Report
  • [Presentation] Arbitrary waveform pulse ESR down to very low temperature

    • Author(s)
      M. Kitagawa, Y. S. Yap, Y. Tabuchi, M. Negoro, A. Kagawa
    • Organizer
      The 5th International Workshop on Far-Infrared Technologies 2014
    • Place of Presentation
      Fukui, Japan
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 高偏極化した核スピンを用いた磁気相転移の量子シミュレーションの実現に向けて

    • Author(s)
      香川晃徳
    • Organizer
      基礎物理学研究所 研究会 量子情報の新展開
    • Place of Presentation
      京都大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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