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Study on the quantum coherence in cuprate superconductor

Research Project

Project/Area Number 21710100
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Nanostructural science
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

KASHIWAYA Hiromi  National Institute of Advanced Industrial Science and Technology, エレクトロニクス研究部門, 研究員 (60443181)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords量子情報 / 量子ビット / 銅酸化物超伝導体 / 固有ジョセブソン接合 / 固有ジョセフソン接合 / 銅酸化物高温超伝導体 / 位相量子ビット
Research Abstract

Intrinsic Josephson junction made of high-Tc superconductor is one of the most promising candidate for the qubit. In this study, an Bi_2Sr_1.6La_o.4CUO_6+δ IJJ array was used because this sample is a good example for investigating the many body problem in quantum mechanics. The experimental result of the IJJ array showed multi-junction switching (MJS) : several intrinsic Josephson junctions (IJJs) in an array switch to the finite voltage state simultaneously. The number of multi-switching junction was successfully tuned by changing the load resistance serially connected to an BBi_2Sr_1.6La_o.4CUO_6+δ IJJ array.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Products Report
  • Research Products

    (18 results)

All 2011 2010 2009

All Journal Article (6 results) (of which Peer Reviewed: 3 results) Presentation (10 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Fabrication of weak-link Nb-based nano-SQUIDs by FIB process2011

    • Author(s)
      T.Matsumoto, H.Kashiwaya, H.Shibata, H.Takayanagi, S.Nomura, S.Kashiwaya
    • Journal Title

      physica C (掲載確定)

    • Related Report
      2010 Final Research Report
  • [Journal Article] Fabrication of weak-link Nb-based nano-SQUIDs by FIB process2011

    • Author(s)
      T.Matsumoto, H.Kashiwaya, H.Shibata, H.Takayanagi, S.Nomura, S.Kashiwaya
    • Journal Title

      physica C

      Volume: (掲載確定)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] C-axis critical current of a PrFeAs_0.7 single crystal, Appl.2010

    • Author(s)
      H.Kashiwaya, K.Shirai, T.Matsumoto, H.Shibata, H.Kambara, M.Ishikado, H.Eisaki, A.Iyo, S.Shamoto, I.Kurosawa
    • Journal Title

      Phys.Lett. 96

    • Related Report
      2010 Final Research Report
  • [Journal Article] Multi-junction switching in Bi_2Sr_1.6La_0.4CuO_6+δ intrinsic Josephson junctions, Appl.2010

    • Author(s)
      H.Kashiwaya, T.Matsumoto, H.Shibata, H.Eisaki, Y.Yoshida, H.Kambara, S.Kawabata, S.Kashiwaya
    • Journal Title

      Phys.Express 3

    • Related Report
      2010 Final Research Report
  • [Journal Article] C-axis critical current of a PrFeAsO_<0.7> single crystal2010

    • Author(s)
      H.Kashiwaya, K.Shirai, T.Matsumoto, H.Shibata, H.Kambara, M.Ishikado, H.Eisaki, A.Iyo, S.Shamoto, I.Kurosawa
    • Journal Title

      Appl.Phys.Lett.

      Volume: 96

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multi-junction switching in Bi_2Sr_1.6La_0.4CuO_<6+δ> intrinsic Josephson junctions2010

    • Author(s)
      柏谷裕美, 他
    • Journal Title

      Appl.Phys.Express Vol.3

    • NAID

      10027014281

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] Switching Properties in Bi2201 Intrinsic Josephson Junctions2010

    • Author(s)
      H.Kashiwaya, T.Matsumoto, H.Shibata, H.Eisaki, Y.Yoshida, S.Kawabata, Y.Tanaka, S.Kashiwaya
    • Organizer
      23rd International Symposium on Superconductivity (ISS2010)
    • Place of Presentation
      つくば国際会議場
    • Year and Date
      2010-11-03
    • Related Report
      2010 Annual Research Report 2010 Final Research Report
  • [Presentation] Fabrication of weak-link Nb-based nano-SQUIDs by FIB process2010

    • Author(s)
      T.Matsumoto, H.Kashiwaya, H.Shibata, A.Yamaguchi, H.Takayanagi, S.Nomura, S.Kashiwaya
    • Organizer
      23rd International Symposium on Superconductivity (ISS2010)
    • Place of Presentation
      つくば国際会議場
    • Year and Date
      2010-11-03
    • Related Report
      2010 Annual Research Report
  • [Presentation] Bi2201固有ジョセブソン接合のセカンドスイッチの特性2010

    • Author(s)
      柏谷裕美, 他
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学津島キャンパス
    • Year and Date
      2010-03-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] Bi2201固有ジョセフソン接合のセカンドスイッチの特性2010

    • Author(s)
      柏谷裕美、松本哲朗、柴田肇、永崎洋、吉田良行、川畑史郎、田仲由喜夫、柏谷聡
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Related Report
      2010 Final Research Report
  • [Presentation] Switching properties in Bi2201 Intrinsic Josephson Junctions2009

    • Author(s)
      柏谷裕美, 他
    • Organizer
      22nd International Symposiumon Superconductivity (ISS2009)
    • Place of Presentation
      エポカルつくば
    • Year and Date
      2009-11-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Local transport properties of PrFeAsO_0.7 using FIB micro-fabrication technique2009

    • Author(s)
      白井一実、柏谷裕美, 他
    • Organizer
      22nd International Symposium on Superconductivity (ISS2009)
    • Place of Presentation
      エポカルつくば
    • Year and Date
      2009-11-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Bi2201固有ジョセブソン接合のスイッチング特性42009

    • Author(s)
      柏谷裕美, 他
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学黒髪キャンパス
    • Year and Date
      2009-09-27
    • Related Report
      2009 Annual Research Report
  • [Presentation] Switching dynamics of Bi_2Sr_1.6La_0.4CuO_<6+δ> Intrinsic Josephson Junctions2009

    • Author(s)
      柏谷裕美, 他
    • Organizer
      12th International Workshop on Vortex Matter in Superconductors
    • Place of Presentation
      東京大学山中寮内藤セミナーハウス(山梨)
    • Year and Date
      2009-09-13
    • Related Report
      2009 Annual Research Report
  • [Presentation] Strong Coupling Effect on MQT of Bi_Sr_1.6La_0.4Cu_O6+δ Intrinsic Josephson Junctions2009

    • Author(s)
      H.Kashiwaya, T.Matsumoto, H.Shibata, H.Eisaki, Y.Yoshida, S.Kawabata, Y.Tanaka, S.Kashiwaya
    • Organizer
      9th International Conference on Materials and Mechanisms of Superconductivity (M2S-IX)
    • Place of Presentation
      京王プラザホテル(東京)
    • Year and Date
      2009-09-08
    • Related Report
      2010 Final Research Report
  • [Presentation] Strong Coupling Effect on MQT of Bi_2Sr_1.6La_0.4CuO_<6+δ> Intrinsic Josephson Junctions2009

    • Author(s)
      柏谷裕美, 他
    • Organizer
      9th International Conference on Materials and Mechanisms of Superconductivity (M2S-IX)
    • Place of Presentation
      京王プラザホテル(新宿)
    • Year and Date
      2009-09-08
    • Related Report
      2009 Annual Research Report
  • [Patent(Industrial Property Rights)] 固有ジョセフソン接合素子、及び、これを用いた量子ビット、超伝導量子干渉素子、テラヘルツ検出器、テラヘルツ発振器、電圧標準装置、ミリ波・サブミリ波受信機、並びに、固有ジョセフソン接合素子の製造方法2010

    • Inventor(s)
      柏谷裕美、柏谷聡
    • Industrial Property Number
      2010-105228
    • Filing Date
      2010-04-30
    • Related Report
      2010 Annual Research Report 2010 Final Research Report
  • [Patent(Industrial Property Rights)] 固有ジョセフソン接合素子、及び、これを用いた量子ビット、超伝導量子干渉素子、テラヘルツ検出器、テラヘルツ発振器、電圧標準装置、ミリ波・サブミリ派受信機、並びに、固有ジョセフソン接合素子の製造方法2010

    • Inventor(s)
      柏谷 裕美, 柏谷 聡
    • Industrial Property Rights Holder
      独立行政法人産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2010-105228
    • Filing Date
      2010-04-30
    • Related Report
      Products Report

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Published: 2009-04-01   Modified: 2016-09-09  

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