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電子スピン制御技術を用いたもつれ光子対の計測実験

Publicly Offered Research

Project Areanano spin conversion science
Project/Area Number 15H01012
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Tokyo

Principal Investigator

松尾 貞茂  東京大学, 大学院工学系研究科(工学部), 助教 (90743980)

Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2016: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Keywords光学スピン閉塞効果 / 量子状態転写 / 光子電子同時検出 / 量子ドット / もつれ光子対 / 光子電子変換 / メゾスコピック系
Outline of Annual Research Achievements

光子電子スピン変換系は量子中継器への応用だけでなく、異種量子ビット間の変換やもつれの研究を行う舞台として魅力的である。本研究では、単一光子偏光から単一電子スピンへと量子状態の転写を行えることの実証と、もつれ光子対から電子スピンと光子偏光との異種量子ビット間のもつれ状態を実現することを目標としている。
まず、昨年度得られた光学スピン閉塞効果に関する実験結果において、軽い正孔の励起波長が実験結果では不明確であるという問題があったため、これを解決するために新たなデバイスを作製し、光電子生成効率の励起波長依存性を調べた。その結果、重い正孔と軽い正孔に対応する波長で生成効率がピークとなることがわかった。また、この軽い正孔励起波長が計算結果や基板の発光実験の結果とも一致することもわかった。これにより、当初目的の量子状態転写の実証が行われたこととなる。
加えて、分布ブラッグ反射構造をもつGaAs基板から新たなデバイスを作製し、光電子変換効率を測定したところ、従来のものよりも大きな効率が得られた。これは、実験の高速化というだけでなく、将来的な量子中継器への応用にとっても大きな意義を持つ結果である。
また、もつれ光子対を用いた実験に関して、昨年度得られた光子と電子の同時検出の兆候をより信頼のあるものにするため、もつれ光子対源から作られた光子の片側を希釈冷凍機中のドットに照射し、生成された光電子ともう片側の光子との同時検出実験を多数回行った。その結果、ドットで電荷が検出された際に、光子検出器側で電荷検出時間内に有限個光子が検出される事象が存在することがわかった。これらの結果から、もつれ光子対から光子と電子の対が生成される事象は、100秒間で3回程度であることがわかった。この結果により、当初目的であった光子対から光子-電子の対を生成する技術確立が達成された。

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (29 results)

All 2017 2016 2015 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (24 results) (of which Int'l Joint Research: 14 results) Remarks (1 results)

  • [Int'l Joint Research] Ruhr University(ドイツ)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Ruhr University(ドイツ)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Giant Fano factor and bistability in a Corbino disk in the quantum Hall effect breakdown regime2016

    • Author(s)
      Tokuro Hata, Tomonori Arakawa, Kensaku Chida, Sadashige Matsuo, and Kensuke Kobayashi
    • Journal Title

      Journal of Physics: Condensed Matter

      Volume: 28 Issue: 5 Pages: 055801-055801

    • DOI

      10.1088/0953-8984/28/5/055801

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anomalous behavior of 1/f noise in graphene near the charge neutrality point2016

    • Author(s)
      Shunpei Takeshita, Sadashige Matsuo, Takahiro Tanaka, Shu Nakaharai, Kazuhito Tsukagoshi, Takahiro Moriyama, Teruo Ono, Tomonori Arakawa, and Kensuke Kobayashi
    • Journal Title

      Applied Physics Letters

      Volume: 108 Issue: 10 Pages: 103106-103106

    • DOI

      10.1063/1.4943642

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Generation of a single pair of a photon and an electron captured in GaAs quantum dot2017

    • Author(s)
      松尾貞茂
    • Organizer
      平成28年度スピン変換年次報告会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2017-03-02
    • Related Report
      2016 Annual Research Report
  • [Presentation] h-BN上InAs量子細線の電気伝導特性2017

    • Author(s)
      鎌田大, R. S. Deacon, 松尾貞茂, 馬場翔二, K. Li, H. Q. Xu, 大岩顕, 樽茶清悟
    • Organizer
      日本物理学会2017年年次大会
    • Place of Presentation
      大阪大学
    • Related Report
      2016 Annual Research Report
  • [Presentation] Al-InAs量子井戸ヘテロ構造から作製した超伝導接合の輸送特性2016

    • Author(s)
      松尾貞茂, 馬場翔司, 上田健人, 鎌田大, 館野瑞樹, Joon Sue Lee, Borzoyeh Shojaei, Chris Palmstrom, 樽茶清悟
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] GaAs横型量子ドットにおける光学的スピン閉塞効果を用いた量子状態転写の実証2016

    • Author(s)
      Marcus Larsson, 黒山和幸, 松尾貞茂, 藤田高史, Sascha R. Valentin, Arne Ludwig, Andreas D. Wieck, 大岩顕, 樽茶清悟
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] Edge mixing dynamics in s quantum Hall pn junction of graphene2016

    • Author(s)
      Sadashige Matsuo, Shunpei Takeshita, Takahiro Tanaka, Shu Nakaharai, Kazuhito Tsukagoshi, Takahiro Moriyama, Teruo Ono, Kensuke Kobayashi
    • Organizer
      9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
    • Place of Presentation
      Kobe International Conference Center, Kobe, Japan
    • Year and Date
      2016-08-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Anomalous reduction of plateau conductance with in-plane magnetic field in InAs quantum wires2016

    • Author(s)
      S. Matsuo, H. Kamata, S. Baba, R. Deacon, J. Shabani, C. Palmstrom, S. Tarucha
    • Organizer
      9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
    • Place of Presentation
      Kobe International Conference Center, Kobe, Japan
    • Year and Date
      2016-08-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Transport property of parallel double quantum dots formed in InAs double-nanowire junctions2016

    • Author(s)
      S. Baba, H. Kamata, S. Matsuo, R.S.Deacon, A.Oiwa , K. Li , H.Q. Xu, S.Tarucha
    • Organizer
      9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
    • Place of Presentation
      Kobe International Conference Center, Kobe, Japan
    • Year and Date
      2016-08-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of quantum state transfer from single polarized photons to single electron spins using optical Pauli blockade effect2016

    • Author(s)
      26.M.Larsson, K. Kuroyama, S.Matsuo, T.Fujita, S.R.Valentin, A.Ludwig, A.Wieck, A.Oiwa, S.Tarucha
    • Organizer
      9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
    • Place of Presentation
      Kobe International Conference Center, Kobe, Japan
    • Year and Date
      2016-08-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Single-electron charge sensing in InAs self-assembled quantum dots2016

    • Author(s)
      H. Kiyama, T. Hirayama, R. Shikishima, S. Matsuo, S. Baba, N. Nagai, K. Hirakawa, S. Tarucha, A. Oiwa
    • Organizer
      Single-electron charge sensing in InAs self-assembled quantum dots
    • Place of Presentation
      Kobe International Conference Center, Kobe, Japan
    • Year and Date
      2016-08-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Generation of single photon-electron pairs from single entangled photon pairs2016

    • Author(s)
      K. Kuroyama, M. Larsson, T. Fujita, S. Matsuo, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S.Tarucha
    • Organizer
      the 33th International Conference on the Physics of Semiconductors(ICPS2016),
    • Place of Presentation
      Beijing International Convention Center, Beijing China
    • Year and Date
      2016-07-31
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Transport properties of suspended InAs nanowires with short junctions2016

    • Author(s)
      H. Kamata, R. S. Deacon, S. Matsuo, S. Baba, K. Li, H. Q. Xu, A. Oiwa, and S. Tarucha
    • Organizer
      the 33th International Conference on the Physics of Semiconductors(ICPS2016)
    • Place of Presentation
      Beijing International Convention Center, Beijing China
    • Year and Date
      2016-07-31
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Andreev Reflection at a Junction of Spin-resolved Quantum Hall State and Superconductor2016

    • Author(s)
      Sadashige Matsuo, Kento Ueda, Shoji Baba, Hiroshi Kamata, Javad Shabani, Christopher Palmstrom, Seigo Tarucha
    • Organizer
      The 22nd International Conference on High Magnetic Fieldes in Semiconductor Physics (HMF22)
    • Place of Presentation
      Jozankei View Hotel, Sapporo, Japan
    • Year and Date
      2016-07-24
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ballistic electron transport in suspended InAs nanowires2016

    • Author(s)
      H. Kamata, R. S. Deacon, S. Matsuo, S. Baba, K. Li, H. Q. Xu, A. Oiwa, S. Tarucha
    • Organizer
      CIQM Frontiers in Quantum Materials and Devices Workshop
    • Place of Presentation
      RIKEN Wako Campus, Saitama, Japan
    • Year and Date
      2016-06-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光子偏光-電子スピン量子もつれ相関の生成に向けた光子-電子の同時検出実験2016

    • Author(s)
      黒山和幸、Marcus Larsson、藤田高史、松尾貞茂、Sascha R. Valentine、Arne Ludwig、Andreas Wieck、大岩顕、樽茶清悟
    • Organizer
      応用物理学会
    • Place of Presentation
      東京工業大学 東京都目黒区
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Quantum Entanglement Conservation through Quantum State Transfer from Single Photon Polarization to Single Electron Spin2016

    • Author(s)
      K. Kuroyama, M.Larsson, T.Fujita, S.Matsuo, S.R.Valentin, A.Ludwig, A.D.Wieck, A.Oiwa and S.Tarucha
    • Organizer
      平成27年度スピン変換年次報告会
    • Place of Presentation
      東北大学 宮城県仙台市
    • Year and Date
      2016-01-07
    • Related Report
      2015 Annual Research Report
  • [Presentation] Optical spin-blockade effect on GaAs quantum dot2016

    • Author(s)
      M.Larsson, K. Kuroyama, S.Matsuo, S.R.Valentin, A.Ludwig, A.D.Wieck, A.Oiwa and S.Tarucha
    • Organizer
      平成27年度スピン変換年次報告会
    • Place of Presentation
      東北大学 宮城県仙台市
    • Year and Date
      2016-01-07
    • Related Report
      2015 Annual Research Report
  • [Presentation] Equal-spin Andreev Reflection between Spin-resolved Quantum Hall Bulk State and Superconductor2016

    • Author(s)
      S. Matsuo, K. Ueda, S. Baba, H. Kamata, M. Tateno, J. Shabani, C. J. Palmstrom, and S. Tarucha
    • Organizer
      International workshop on nano-spin conversion science & quantum spin dynamics (NSCS-QSM)
    • Place of Presentation
      Takeda Hall, The University of Tokyo, Tokyo, Japan
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Single photon-electron pairs generation from polarization entangled photon pairs2016

    • Author(s)
      K. Kuroyama, M. Larsson, T. Fujita, S. Matsuo, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S.Tarucha
    • Organizer
      International workshop on nano-spin conversion science & quantum spin dynamics (NSCS-QSM)
    • Place of Presentation
      Takeda Hall, The University of Tokyo, Tokyo, Japan
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Transport properties of InAs nanowires on hexagonal boronnitride2016

    • Author(s)
      H. Kamata, R. S. Deacon, S. Matsuo, S. Baba, K. Li, H. Q. Xu, A. Oiwa, S. Tarucha
    • Organizer
      International workshop on nano-spin conversion science & quantum spin dynamics (NSCS-QSM)
    • Place of Presentation
      Takeda Hall, The University of Tokyo, Tokyo, Japan
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 架橋型InAs量子細線におけるバリスティック伝導特性2016

    • Author(s)
      鎌田大, R. S. Deacon, 松尾貞茂, 馬場翔二, K. Li, H. Q. Xu, 大岩顕, 樽茶清悟
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学
    • Related Report
      2016 Annual Research Report
  • [Presentation] Quantum Entanglement Conservation through Coherent Quantum State Transfer from a Single Photon Polarization to an Electron Spin in a Lateral Double Quantum Dot2015

    • Author(s)
      K. Kuroyama, M. Larsson, T. Fujita, S. Matsuo, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S.Tarucha
    • Organizer
      International Symposium on Nanoscale Transport and Technology 2015(ISNTT2015)
    • Place of Presentation
      NTT厚木R&Dセンタ 神奈川県厚木市
    • Year and Date
      2015-11-17
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光子偏光-電子スピン間量子もつれ相関の生成に向けた光子-電子の同時検出実験2015

    • Author(s)
      黒山和幸, Marcus Larsson, 藤田高史, 松尾貞茂, Sascha R. Valentin, Arne Ludwig, Andreas Wieck, 大岩顕, 樽茶清悟
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      関西大学 大阪府吹田市
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] Coincidence measurement of a photon and an electron towards quantum entanglement generation between a photon polarization and an electron spin2015

    • Author(s)
      Kazuyuki Kuroyama
    • Organizer
      第5回半導体量子効果と量子情報の夏季研修会
    • Place of Presentation
      ホテルサンバレー那須 栃木県那須郡
    • Year and Date
      2015-09-10
    • Related Report
      2015 Annual Research Report
  • [Presentation] Quantum Entanglement Conservation in Coherent Quantum State Transfer from a Single Photon Polarization to an Electron Spin in a Lateral Quantum Dot2015

    • Author(s)
      K. Kuroyama, M.Larsson, T.Fujita , S.Matsuo, S.R.Valentin, A.Ludwig, A.Wieck, A.Oiwa and S.Tarucha
    • Organizer
      New Perspectives in Spintronic and Mesoscopic Physics
    • Place of Presentation
      東京大学物性研究所 千葉県柏市
    • Year and Date
      2015-06-01
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 光-スピンインターフェース

    • URL

      http://www.meso.t.u-tokyo.ac.jp/

    • Related Report
      2016 Annual Research Report 2015 Annual Research Report

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Published: 2015-04-16   Modified: 2018-03-28  

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