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Quantum Theory of Fluxon

Research Project

Project/Area Number 18540352
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionHiroshima University

Principal Investigator

HATAKENAKA Noriyuki  Hiroshima University, 大学院・総合科学研究科, 教授 (70363009)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,480,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥480,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2006: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywords超低温 / 超伝導 / 磁束量子 / 量子ビット / ジョセフソン効果 / トンネル現象
Research Abstract

本研究は, 長いジョセフソン接合中のトポロジカルな素励起であるフラクソン(磁束量子)の量子力学的特性の解明とその応用を目的とし, 以下の結果を得た.(1) フラクソンの量子透過共鳴現象を通して, その量子性を明らかにした.また,(2) それを用いてフラクソン量子情報処理技術を構築した.さらに,(3) 量子力学における根幹問題である「アインシュタインの月」のパラドックスに対して, 統計処理を必要としない新しいスキームを提案した.

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (53 results)

All 2009 2008 2007 2006

All Journal Article (24 results) (of which Peer Reviewed: 12 results) Presentation (27 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] NMR imaging analogue of the individual qubit operations in superconducting flux-qubit chains2009

    • Author(s)
      T. Fujii, S. Matsuo and N. Hatakenaka
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 22011-22011

    • Related Report
      2008 Final Research Report
  • [Journal Article] Theory of damped Rabi oscillations at finite temperatures2009

    • Author(s)
      S. Matsuo, T. Fujii, N. Kosugi and N. Hatakenaka
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 22056-22056

    • Related Report
      2008 Final Research Report
  • [Journal Article] Squeezing of quantum flux in a double SQUID system2009

    • Author(s)
      K. Takashima, S. Matsuo, T. Fujii, N. Hatakenaka, S. Kurihara and A. Zeilinger
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 52260-52260

    • Related Report
      2008 Final Research Report
  • [Journal Article] Theory of damped coherent oscillations in superconducting phase qubits2009

    • Author(s)
      N. Kosugi, S. Matsuo, and N. Hatakenaka
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 22047-22047

    • Related Report
      2008 Final Research Report
  • [Journal Article] Squeezing of a quantum flux in a double rf-SQUID system2009

    • Author(s)
      K. Takashima
    • Journal Title

      Journal of Physics : Conference Series (印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theory of damped Rabi oscillations at finite temperatures2009

    • Author(s)
      S. Matsuo
    • Journal Title

      Journal of Physics : Conference Series (印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] NMR analogue of the individual qubit operations in superconducting flux-qubit chains2009

    • Author(s)
      T. Fujii
    • Journal Title

      Journal of Physics : Conference Series (印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theory of damped quantum oscillations in superconducting phase qubits2009

    • Author(s)
      N. Kosugi
    • Journal Title

      Journal of Physics : Conference Series (印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mobile qubits in quantum Josephson circuits2008

    • Author(s)
      T. Fujii, M. Nishida, and N. Hatakenaka
    • Journal Title

      Physical Review B 77

      Pages: 24505-24505

    • Related Report
      2008 Final Research Report
  • [Journal Article] Nonstationary boundary effect for a quantum flux in superconducting nanocircuits2008

    • Author(s)
      K. Takashima, N. Hatakenaka, S. Kurihara, and A. Zeilinger
    • Journal Title

      Journal of Physics ; Mathematical and Theoretical 41

      Pages: 164036-164036

    • Related Report
      2008 Final Research Report
  • [Journal Article] Mobile fluxon qubits in a long superconductor-ferromagnetsuperconductor Josephson junction2008

    • Author(s)
      M. Nishida, T. Fujii, and N. Hatakenaka
    • Journal Title

      Journal of Physics : Conference Series 97

      Pages: 12326-12326

    • Related Report
      2008 Final Research Report
  • [Journal Article] Mobile qubits in quantum Josephson circuits2008

    • Author(s)
      T. Fujii
    • Journal Title

      Physical Review B 77

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mobile fluxon qubits in a long superconductor-ferromagnet-superconduct or Josephson junction2008

    • Author(s)
      M. Nishida
    • Journal Title

      Journal of Physics: Conference Series (印刷中)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonstationary boundary effect for a quantum flux in superconducting nanocircuits2008

    • Author(s)
      K. Takashima
    • Journal Title

      Journal of Physics A (印刷中)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Flying superconducting qubits2007

    • Author(s)
      T. Fujii, T. Shibata, M. Nishida, and N. Hatakenaka
    • Journal Title

      IEEE Transactions on Applied Superconductivity 17

      Pages: 97-97

    • Related Report
      2008 Final Research Report
  • [Journal Article] The effect of dissipation on quantum transmission resonance2007

    • Author(s)
      K. Konno, M. Nishida, S. Tanda, and N. Hatakenaka
    • Journal Title

      Physics Letters A 368

      Pages: 442-442

    • NAID

      120000878187

    • Related Report
      2008 Final Research Report
  • [Journal Article] Generation of macroscopic entangled states in coupled superconducting phase qubits2007

    • Author(s)
      S. Matsuo, S. Ashhab, T. Fujii, F. Nori, K. Nagai, and N. Hatakenaka
    • Journal Title

      Journal of the Physical Society of Japan 76

    • NAID

      110006273203

    • Related Report
      2008 Final Research Report
  • [Journal Article] Fluxon-based gate controls of capacitively coupled flux-based-phase qubits2007

    • Author(s)
      S. Matsuo, K. Furuta, T. Fujii, K. Nagai, and N. Hatakenaka
    • Journal Title

      Applied Physics Letters 91

      Pages: 93103-93103

    • Related Report
      2008 Final Research Report
  • [Journal Article] Time dilation of a bound half-fluxon pair in a long Josephson junction with a ferromagnetic insulator2007

    • Author(s)
      M. Nishida, K. Murata, T. Fujii, and N. Hatakenaka
    • Journal Title

      Physical Review Letters 99

      Pages: 207004-207004

    • Related Report
      2008 Final Research Report
  • [Journal Article] The effect of dissipation on quantum transmission resonance2007

    • Author(s)
      K. Konno
    • Journal Title

      Physics Letters A 368

      Pages: 442-449

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fluxon-based gate controls of capacitively coupled flux-based-phase qubits2007

    • Author(s)
      S. Matsuo
    • Journal Title

      Applied Physics Letters 91

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Generation of macroscopic entangled states in coupled superconducting phase qubits2007

    • Author(s)
      S. Matsuo
    • Journal Title

      Journal of the Physical Society of Japan 76

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Time dilation of a bound half-fluxon pair in a long Josephson junction with a ferromagnetic insulator2007

    • Author(s)
      M. Nishida
    • Journal Title

      Physical Review Letters 99

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Flying superconducting qubits2007

    • Author(s)
      T. Fujii
    • Journal Title

      IEEE Transactions on Applied Superconductivity 17

      Pages: 97-100

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] 超伝導人工原子における磁束量子のスクイージング2009

    • Author(s)
      高嶋耕司, 藤井敏之, 松尾繁政, 畠中憲之, 栗原進, A. Zeilinger
    • Organizer
      『応用物理学会』第56回学術講演会
    • Place of Presentation
      筑波大学
    • Year and Date
      2009-04-02
    • Related Report
      2008 Final Research Report
  • [Presentation] フラクソン制御による超伝導磁束量子コンピュータの理論2009

    • Author(s)
      藤井敏之,松尾繁政,畠中憲之
    • Organizer
      『日本物理学会』第64回年次大会
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-27
    • Related Report
      2008 Final Research Report
  • [Presentation] フラクソン制御による超伝導磁束量子コンピュータの理論2009

    • Author(s)
      藤井敏之
    • Organizer
      日本物理学会第64回年次大会
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-27
    • Related Report
      2008 Annual Research Report
  • [Presentation] Proposal of a temporal Greenberger-Horne-Zeilinger test2008

    • Author(s)
      N. Hatakenaka
    • Organizer
      The Clock and the Quantum : Time and Quantum Foundations
    • Place of Presentation
      Warterloo (Canada)
    • Year and Date
      2008-10-01
    • Related Report
      2008 Annual Research Report
  • [Presentation] NMRイメージング法による磁束量子ビットの個別制御理論2008

    • Author(s)
      藤井敏之, 松尾繁政, 畠中憲之
    • Organizer
      『日本物理学会』2008年秋季大会
    • Place of Presentation
      岩手大学
    • Year and Date
      2008-09-22
    • Related Report
      2008 Final Research Report
  • [Presentation] ジョセフソン伝送線路におけるブリーザー間相互作用2008

    • Author(s)
      西田宗弘, 古川善己, 藤井敏之, 畠中憲之
    • Organizer
      『日本物理学会』2008年秋季大会
    • Place of Presentation
      岩手大学
    • Year and Date
      2008-09-22
    • Related Report
      2008 Final Research Report
  • [Presentation] NMRイメージング法による磁束量子ビットの個別制御理論2008

    • Author(s)
      藤井敏之
    • Organizer
      日本物理学会2008年度秋季大会
    • Place of Presentation
      岩手大学
    • Year and Date
      2008-09-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] Squeezing of a quantum flux in a double rf-SQUID system2008

    • Author(s)
      N. Hatakenaka
    • Organizer
      25^<th> international conference on Low Temperature Physics
    • Place of Presentation
      Amsterdam (Netherlands)
    • Year and Date
      2008-08-11
    • Related Report
      2008 Annual Research Report
  • [Presentation] Theory of damped Eabi oscillations at finite temperatures2008

    • Author(s)
      S. Matsuo
    • Organizer
      25^<th> international conference on Low Temperature Physics
    • Place of Presentation
      Amsterdam (Netherlands)
    • Year and Date
      2008-08-09
    • Related Report
      2008 Annual Research Report
  • [Presentation] NMR analogue of the individual qubit operations in superconducting flux-qubit chains2008

    • Author(s)
      T. Fujii
    • Organizer
      25^<th> international conference on Low Temperature Physics
    • Place of Presentation
      Amsterdam (Netherlands)
    • Year and Date
      2008-08-09
    • Related Report
      2008 Annual Research Report
  • [Presentation] Theory of damped quantum oscillations in superconducting phase qubits2008

    • Author(s)
      N. Kosugi
    • Organizer
      25^<th> international conference on Low Temperature Physics
    • Place of Presentation
      Amsterdam (Netherlands)
    • Year and Date
      2008-08-08
    • Related Report
      2008 Annual Research Report
  • [Presentation] 超伝導量子回路における"動的カシミール効果"2008

    • Author(s)
      高嶋耕司, 畠中憲之, 栗原進 A.Zeilinger
    • Organizer
      『応用物理学会』第55回学術講演会
    • Place of Presentation
      日本大学
    • Year and Date
      2008-03-27
    • Related Report
      2008 Final Research Report
  • [Presentation] 超伝導量子回路における"動的カシミール効果"2008

    • Author(s)
      高嶋耕司
    • Organizer
      応用物理学会第55回学術講演会
    • Place of Presentation
      日本大学(船橋)
    • Year and Date
      2008-03-27
    • Related Report
      2007 Annual Research Report
  • [Presentation] 超伝導/強磁性/超伝導接合中のπフラクソン対における相対論的時間遅れ2008

    • Author(s)
      西田宗弘, 藤井敏之, 畠中憲之
    • Organizer
      『日本物理学会』第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-24
    • Related Report
      2008 Final Research Report
  • [Presentation] 超伝導/強磁性/超伝導接合中のπフラクソン対における相対論的時間遅れ2008

    • Author(s)
      西田宗弘
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学(東大阪市)
    • Year and Date
      2008-03-24
    • Related Report
      2007 Annual Research Report
  • [Presentation] 磁束量子を用いた超伝導位相量子ビットのエンタングルメント生成2008

    • Author(s)
      藤井敏之, 松尾繁政, 畠中憲之
    • Organizer
      『日本物理学会』第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-23
    • Related Report
      2008 Final Research Report
  • [Presentation] 磁束量子を用いた超伝導位相量子ビット間の相互作用制御2008

    • Author(s)
      松尾繁政, 古田佳野子, 藤井敏之, 永井克彦, 畠中憲之
    • Organizer
      『日本物理学会』第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-23
    • Related Report
      2008 Final Research Report
  • [Presentation] 磁束量子を用いた超伝導位相量子ビットのエンタングルメント生成2008

    • Author(s)
      藤井敏之
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学(東大阪市)
    • Year and Date
      2008-03-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] 磁束量子を用いた超伝導位相量子ビット間の相互作用制御2008

    • Author(s)
      松尾繁政
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学(東大阪市)
    • Year and Date
      2008-03-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Theory of multipartite entangled state generation in coupled phase qubits2007

    • Author(s)
      T. Fujii
    • Organizer
      International Conference on Quantum information processing and Communication 2007
    • Place of Presentation
      Barcelona, Spain
    • Year and Date
      2007-10-16
    • Related Report
      2007 Annual Research Report
  • [Presentation] 相対論的ジョセフソン・ブリーザーの量子崩壊2007

    • Author(s)
      藤井敏之, 西田宗弘, 畠中憲之
    • Organizer
      『日本物理学会』第62回年次大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2007-09-22
    • Related Report
      2008 Final Research Report
  • [Presentation] 超伝導位相量子ビットにおける量子絡み合い状態の生成2007

    • Author(s)
      松尾繁政, S. Asshab, 藤井敏之, F. Nori, 畠中憲之
    • Organizer
      『日本物理学会』第62回年次大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2007-09-22
    • Related Report
      2008 Final Research Report
  • [Presentation] 相対論的ジョセフソン・ブリーザーの量子崩壊2007

    • Author(s)
      藤井敏之
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学(札幌)
    • Year and Date
      2007-09-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] 超伝導位相量子ビットにおける量子絡み合い状態の生成2007

    • Author(s)
      松尾繁政
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学(札幌)
    • Year and Date
      2007-09-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] Mobile fluxon qubits in a long superconductor-ferromagnet-superconduct or Josephson junction2007

    • Author(s)
      M. Nishida
    • Organizer
      European Conference on Applied Superconductivity
    • Place of Presentation
      Brussels, Belgium
    • Year and Date
      2007-09-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] Dynamical Casimir effect in Josephson artificial atoms2007

    • Author(s)
      畠中憲之
    • Organizer
      Workshop on Quantum Field Theory under the in fluence of external conditions (QFEXT07)
    • Place of Presentation
      Leipzig ドイツ
    • Year and Date
      2007-09-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] ブリーザー量子ビットII2006

    • Author(s)
      藤井敏之, 西田宗弘, 畠中憲之
    • Organizer
      『日本物理学会』秋季大会24aXJ-2
    • Place of Presentation
      千葉大学
    • Year and Date
      2006-09-24
    • Related Report
      2008 Final Research Report
  • [Patent(Industrial Property Rights)] 単一光子発生方法および装置、並びに単一光子検出方法及び装置2008

    • Inventor(s)
      高嶋耕司, 上松和夫, 畠中憲之
    • Industrial Property Rights Holder
      IHI
    • Filing Date
      2008-03-14
    • Related Report
      2008 Final Research Report
  • [Patent(Industrial Property Rights)] 単一光子発生方法および装置、並びに単一光子検出方法及び装置2008

    • Inventor(s)
      高嶋耕司
    • Industrial Property Rights Holder
      IHI・広島大学
    • Industrial Property Number
      2008-060586
    • Filing Date
      2008-03-14
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2020-05-15  

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