Experimental study of one-dimensional electron systems with strong spin-orbit interaction and the superconducting junction

• Project/Area Number: 18H01813
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 28020:Nanostructural physics-related
• Research Institution: Institute of Physical and Chemical Research (2019-2020); The University of Tokyo (2018)
• Principal Investigator: Sadashige Matsuo 国立研究開発法人理化学研究所, 創発物性科学研究センター, 基礎科学特別研究員 (90743980)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000); Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2018: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
• Keywords: 朝永ラッティンジャー液体 / スピン軌道相互作用 / ジョセフソン接合 / マヨラナ粒子 / クーパー対分離 / スケーリング / 超伝導接合 / 超伝導 / ナノ細線

Outline of Final Research Achievements

We observed Luttinger liquid behavior in InAs wires that hold strong spin-orbit interaction. From the experimental and theoretical aspects, we proved that the spin-orbit interaction causes little effect on the Luttinger liquid. In a double InAs nanowire Josephson junction, we detected a ballistic Cooper pair splitting and evaluated a gap energy of the nonlocal superconducting proximity effect. In a single InAs nanowire Josephson junction, we discovered the half-integer Shapiro steps derived from the ballistic transport of the nanowire and revealed that the supercurrent enhancement invoked by the magnetic field is assigned to the electron cooling due to the quasiparticle trapping at the vortex cores. Then we observed the integer Shapiro steps in the topological insulator Josephson junctions and obtained the important knowledge for suitable device structures to hunt the Majorana Fermions.

Academic Significance and Societal Importance of the Research Achievements

InAs細線のラッティンジャー液体性に関する研究は、強いスピン軌道相互作用とラッティンジャー液体という普遍的な物理に関する重要な実験結果を掲示したものであり、1次元系の物理の発展に寄与する。弾道的クーパー対分離の結果では、マヨラナ粒子の実現に必要な条件が達成可能であることを実証しており、将来的な無磁場でのマヨラナ粒子の実現とトポロジカル量子計算の基盤技術につながる。半整数シャピロ階段および準粒子トラップによる超伝導電流の増強は、単一ナノ細線系での異常な現象が必ずしもマヨラナ粒子と関連してはいないことを示しており、今後のマヨラナ粒子の実証実験における指標となるもので重要な意義を持つ。

Research Products

• [Int'l Joint Research] 北京大学(中国)
• [Int'l Joint Research] カリフォルニア大学(米国)
• [Int'l Joint Research] Ruhr 大学(ドイツ)
• [Int'l Joint Research] Lund大学(スウェーデン)
• [Int'l Joint Research] 北京大学(中国)
• [Int'l Joint Research] カリフォルニア大学/PennState大学(米国)
• [Int'l Joint Research] カリフォルニア大学/PennState University(米国)
• [Int'l Joint Research] 北京大学(中国)
• [Int'l Joint Research] ルンド大学(スウェーデン)
• [Int'l Joint Research] バーゼル大学(スイス)
• [Journal Article] Evidence of half-integer Shapiro steps originated from nonsinusoidal current phase relation in a short ballistic InAs nanowire Josephson junction (2020)
  • Author(s): Ueda Kento、Matsuo Sadashige、Kamata Hiroshi、Sato Yosuke、Takeshige Yuusuke、Li Kan、Samuelson Lars、Xu Hongqi、Tarucha Seigo
  • Journal Title: Physical Review Research Volume: 2 Issue: 3 Pages: 033435-033435
  • DOI: 10.1103/physrevresearch.2.033435
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Full counting statistics of spin-flip and spin-conserving charge transitions in Pauli-spin blockade (2020)
  • Author(s): Matsuo Sadashige、Kuroyama Kazuyuki、Yabunaka Shunsuke、Valentin Sascha R.、Ludwig Arne、Wieck Andreas D.、Tarucha Seigo
  • Journal Title: Physical Review Research Volume: 2 Issue: 3 Pages: 033120-033120
  • DOI: 10.1103/physrevresearch.2.033120
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Evaluation of the vortex core size in gate-tunable Josephson junctions in Corbino geometry (2020)
  • Author(s): Matsuo Sadashige、Tateno Mizuki、Sato Yosuke、Ueda Kento、Takeshige Yuusuke、Kamata Hiroshi、Lee Joon Sue、Shojaei Borzoyeh、Palmstrom Christopher J.、Tarucha Seigo
  • Journal Title: Physical Review B Volume: 102 Issue: 4 Pages: 045301-045301
  • DOI: 10.1103/physrevb.102.045301
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Experimental study of ac Josephson effect in gate-tunable (Bi1竏遅Sbx)2Te3 thin-film Josephson junctions (2020)
  • Author(s): [Yuusuke Takeshige,Sadashige Matsuo,Russell S. Deacon,Kento Ueda,Yosuke Sato,Yi-Fan Zhao,Lingjie Zhou,Cui-Zu Chang,Koji Ishibashi,Seigo Tarucha]
  • Journal Title: Physical Review B Volume: 101 Issue: 11 Pages: 115410-115410
  • DOI: 10.1103/physrevb.101.115410
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dominant nonlocal superconducting proximity effect due to electron-electron interaction in a ballistic double nanowire (2019)
  • Author(s): [Kento Ueda,Sadashige Matsuo,Hiroshi Kamata,Shoji Baba,Yosuke Sato,Yuusuke Takeshige,Kan Li,Sテカren Jeppesen,Lars Samuelson,Hongqi Xu,Seigo Tarucha]
  • Journal Title: Science Advances Volume: 5 Issue: 10 Pages: 2194-2194
  • DOI: 10.1126/sciadv.aaw2194
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Charge transport of a spin-orbit-coupled Tomonaga-Luttinger liquid (2019)
  • Author(s): [Chen-Hsuan Hsu,Peter Stano,Yosuke Sato,Sadashige Matsuo,Seigo Tarucha,Daniel Loss]
  • Journal Title: Physical Review B Volume: 100 Pages: 195423-195423
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Strong Electron-Electron Interactions of a Tomonaga--Luttinger Liquid Observed in InAs Quantum Wires (2019)
  • Author(s): [Yosuke Sato,Sadashige Matsuo,Chen-Hsuan Hsu,Peter Stano,Kento Ueda,Yuusuke Takeshige,Hiroshi Kamata,Joon Sue Lee,Borzoyeh Shojaei,Kaushini Wickramasinghe,Javad Shabani,Chris Palmstrテクm,Yasuhiro Tokura,Daniel Loss,Seigo Tarucha]
  • Journal Title: Physical Review B Volume: 99 Pages: 155304-155304
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Strong Electron-Electron Interactions of a Tomonaga--Luttinger Liquid Observed in InAs Quantum Wires (2019)
  • Author(s): Yosuke Sato, Sadashige Matsuo, Chen-Hsuan Hsu, Peter Stano, Kento Ueda, Yuusuke Takeshige, Hiroshi Kamata, Joon Sue Lee, Borzoyeh Shojaei, Kaushini Wickramasinghe, Javad Shabani, Chris Palmstr?m, Yasuhiro Tokura, Daniel Loss, Seigo Tarucha
  • Journal Title: Physical Review B Volume: accepted
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Photogeneration of a single electron from a single Zeeman-resolved light-hole exciton with preserved angular momentum (2019)
  • Author(s): Kuroyama K.、Larsson M.、Chang C. Y.、Muramoto J.、Heya K.、Fujita T.、Allison G.、Valentin S. R.、Ludwig A.、Wieck A. D.、Matsuo S.、Oiwa A.、Tarucha S.
  • Journal Title: Physical Review B Volume: 99 Issue: 8 Pages: 85203-85203
  • DOI: 10.1103/physrevb.99.085203
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Dominant non-local superconducting proximity effect due to electron-electron interaction in a ballistic double nanowire (2018)
  • Author(s): Kento Ueda, Sadashige Matsuo, Hiroshi Kamata, Shoji Baba, Yosuke Sato, Yusuke Takeshige, Kan Li, Soren Jeppesen, Lars Samuelson, Hongqi Xu, Seigo Tarucha
  • Journal Title: arXiv Volume: 1810 Pages: 04823-04823
  • Open Access / Int'l Joint Research
• [Journal Article] Anomalous modulation of Josephson radiation in nanowire-based Josephson junctions (2018)
  • Author(s): H. Kamata, R. S. Deacon,S. Matsuo, K. Li, S. Jeppesen, L. Samuelson, H. Q. Xu, K. Ishibashi, and S. Tarucha,
  • Journal Title: Phys. Rev. B Volume: 98 Issue: 4 Pages: 41302-41302
  • DOI: 10.1103/physrevb.98.041302
  • Peer Reviewed / Int'l Joint Research
• [Presentation] 二重ナノ細線を用いた非局所ジョセフソン効果の観測 (2021)
  • Author(s): 松尾貞茂, Joon Sue Lee, Chien-Yuan Chang, 佐藤洋介, 上田健人, Christopher Palmstrom, 樽茶清悟
  • Organizer: ワークショップ「超伝導物質、トポロジカル物質」（SCTM2020）
• [Presentation] Control of the DC and AC Josephson effects on the ballistic nanowires (2020)
  • Author(s): Sadashige Matsuo
  • Organizer: CEMS Topical Meeting Online Quantum Technology meets Quantum Matter
  • Int'l Joint Research / Invited
• [Presentation] Universal behavior of low-dimensional systems on Si and Ge quantum well (2020)
  • Author(s): Y. Sato, X. Liu, K. Takeda, A. Noiri, T. Nakajima, K. Ueda, S. Matsuo, A. Sammak, M. Veldhorst, G. Scappucci, and S. Tarucha
  • Organizer: The 25th symposium on the Physics and Applications of Spin-related Phenomena in Semiconductors (PASPS-25)
• [Presentation] 半導体ナノ細線における弾道的ジョセフソン効果の観測と制御 (2020)
  • Author(s): 松尾貞茂
  • Organizer: 東京大学物性研究所ワークショップ「ナノスケール物性科学の最先端と新展開」
  • Invited
• [Presentation] 半導体ナノ細線を用いたマヨラナ粒子実現の試みと展望 (2020)
  • Author(s): [松尾 貞茂]
  • Organizer: 2019年度第2回ATIスピントロニクス研究会
  • Invited
• [Presentation] Tomonaga-Luttinger liquid behavior in wires on an InAs Quantum well holding strong spin-orbit interaction (2020)
  • Author(s): [佐藤 洋介, 松尾 貞茂, C.-H. Hsu, P. Stano, 武重 有祐, 鎌田 大, J. S. Lee, B. Shojaei, K. Wickramasinghe, J. Shabani, C. Palmstrom, 都倉 康弘, D. Loss, 樽茶 清悟]
  • Organizer: New Perspective in Spin Conversion Science (NPSCS2020)
  • Int'l Joint Research
• [Presentation] Cooper pair splitting in a ballistic Josephson junction of InAs double nanowire (2019)
  • Author(s): [Kento Ueda,Sadashige Matsuo,Hiroshi Kamata,Yosuke Sato,Yusuke Takeshige,Kan Li,Soren Jeppesen,Lars Samuelson,Hong-qi Xu,Seigo Tarucha]
  • Organizer: New materials and structures in topological and correlated systems (Gordon research conference)
  • Int'l Joint Research
• [Presentation] Strong electron-electron interactions of a Tomonaga-Luttinger liquid observed in wires formed on InAs quantum well (2019)
  • Author(s): [Yosuke Sato,Sadashige Matsuo,Chen-Hsuan Hsu,Peter Stano,Daniel Loss,Kento\, Ueda,Yuusuke Takeshige,Hiroshi Kamata,Joon Sue Lee,Borzoyeh Shojaei,Javad Shabani,Christopher Palmstrom,Yasuhiro Tokura,Seigo Tarucha]
  • Organizer: New materials and structures in topological and correlated systems (Gordon research conference)
  • Int'l Joint Research
• [Presentation] Experimental study of gate tunable Josephson junctions on topological insulator (Bi0.8Sb0.2)2Te3 (2019)
  • Author(s): [Y. Takeshige,S. Matsuo,Russell S. Deacon,Kento Ueda,Yosuke Sato,Yi-Fan Zhao,Ling Zhang,Cui-Zu Chang,Koji Ishibashi,Seigo Tarucha]
  • Organizer: Quantum Designer Physics 2019
  • Int'l Joint Research
• [Presentation] Experimental study on full counting statistics of the Pauli spin blockade effect (2019)
  • Author(s): [S. Matsuo,K. Kuroyama,S. Yabunaka,J. Muramoto,S. R. Valentin,A. Ludwig,A. D. Wieck,S. Tarucha]
  • Organizer: Quantum Designer Physics 2019
  • Int'l Joint Research
• [Presentation] Observation of dominant non-local superconducting proximity effect due to electronelectron interaction in a ballistic double nanowire (2019)
  • Author(s): [Kento Ueda,Sadashige Matsuo,Hiroshi Kamata,Yosuke Sato,Yusuke Takeshige,K. Li,Soren Jeppessen,Lars Samuelson,Hongqi Xu,Seigo Tarucha]
  • Organizer: Compound Semiconductor Week 2019
  • Int'l Joint Research
• [Presentation] Observation of a.c. Josephson effect in gate tunable Josephson junction on topological insulator (Bi0.2Sb0.8)2Te3 films (2019)
  • Author(s): [Yuusuke Takeshige,Sadashige Matsuo,Russell Stewart Deacon,Kento Ueda,Yosuke Sato,Yi-Fan Zhao,Ling Zhang,Cui-Zu Chang,Koji Ishibashi,Seigo Tarucha]
  • Organizer: Compound Semiconductor Week 2019
  • Int'l Joint Research
• [Presentation] Breakdown of Pauli spin blockade by phonon irradiation in a GaAs double quantum dot (2019)
  • Author(s): [S. Matsuo,K. Kuroyama,J. Muramoto,S. R. Valentin,A. Ludwig,A. D. Wieck,Y. Tokura,S. Tarucha]
  • Organizer: Compound Semiconductor Week 2019
  • Int'l Joint Research
• [Presentation] 半導体ナノ細線への非局所超伝導近接効果の観測と制御 (2019)
  • Author(s): [松尾貞茂]
  • Organizer: 第27回渦糸物理ワークショップ
  • Invited
• [Presentation] Real-time observation of spin-flip tunneling processes driven by a nearby phonon source (2019)
  • Author(s): [黒山和幸,松尾貞茂,Sascha R. Valentin,Arne Ludwig,Andreas D. Wieck,都倉康弘,樽茶清悟]
  • Organizer: International Symposium on Hybrid Quantum Systems 2019 (HQS2019)
  • Int'l Joint Research
• [Presentation] Anomalous Shapiro steps in Josephson junctions of ballistic InAs nanowires (2019)
  • Author(s): [上田健人,松尾貞茂,鎌田大,佐藤洋介,武重有祐,K. Li,S. Jeppesen,L. Samuelson,H. Q. Xu,樽茶清悟]
  • Organizer: International Symposium on Hybrid Quantum Systems 2019 (HQS2019)
  • Int'l Joint Research
• [Presentation] 半導体ナノ細線の超伝導接合を用いたマヨラナ粒子実証の試み (2019)
  • Author(s): [松尾貞茂]
  • Organizer: マヨラナ励起の実証に向けて
  • Invited
• [Presentation] InAsナノ細線ジョセフソン接合におけるシャピロステップのゲート依存性 (2019)
  • Author(s): [上田健人,松尾貞茂,鎌田大,佐藤洋介,武重有祐,K. Li,S. Jeppesen,L. Samuelson,H. Q. Xu,樽茶清悟]
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] GaAs二重量子ドットにおけるパウリスピン閉塞効果の完全計数統計 (2019)
  • Author(s): [松尾貞茂,黒山和幸,藪中俊介,Sascha R. Valentin,Arne Ludwig,Andreas D. Wieck,樽茶清悟]
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] Experimental study on superconducting junctions of a double InAs nanowire (2019)
  • Author(s): [松尾貞茂]
  • Organizer: The Future of Topological Materials
  • Int'l Joint Research / Invited
• [Presentation] Polarization-to-spin conversion and entanglement absorption via a double quantum dot device (2019)
  • Author(s): Chien-Yuan Chang, , K. Kuroyama, S. Matsuo, S. R. Valentin, A. Ludwig, A. D. Wieck, A. Oiwa, and Seigo Tarucha
  • Organizer: 平成30年度スピン変換年次報告会
• [Presentation] Polarization-to-spin conversion and entanglement distribution via coherent interface with semiconductor double quantum dot (2019)
  • Author(s): Chien-Yuan Chang, Kazuyuki kuroyama, Marcus Larsson, Sadashige Matsuo, Takafumi Fujita, Sascha R Valentin, Arne Ludwig, Andreas D. Wieck, Akira Oiwa,Seigo Tarucha
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Presentation] トポロジカル絶縁体(Bi1-xSbx)2Te3のジョセフソン接合における交流ジョセフソン効果 (2019)
  • Author(s): 武重有祐, 松尾貞茂, Russell S. Deacon, 上田健人, 佐藤洋介, Yi-Fan Zhao, Ling Zhang, Cui-Zu Chang, 石橋幸治, 樽茶清悟
  • Organizer: 日本物理学会2019年春季大会
• [Presentation] Induced superconductivity in double InAs nanowires (2019)
  • Author(s): 松尾貞茂
  • Organizer: 日本物理学会2019年春季大会
  • Invited
• [Presentation] GaAs横型二重量子ドットにおけるフォノン励起のスピン三重項を介した単一電子のトンネル現象の実時間観測 (2019)
  • Author(s): 黒山和幸, 松尾貞茂, 村本丈, Sascha R. Valentin, Arne Ludwig, Andreas D. Wieck, 都倉康弘, 樽茶清悟,
  • Organizer: 日本物理学会2019年春季大会
• [Presentation] Two electron spin dynamics in a double quantum dot driven by a phonon source (2018)
  • Author(s): K. Kuroyama, S. Matsuo, J. Muramoto, S. R. Valentin, A. Ludwig, A. D. Wieck, Y. Tokura and S. Tarucha
  • Organizer: One-Day Symposium on Spintronic Properties of Graphene and Related 2D Materials
• [Presentation] Strong electron-electron interaction and Non-local superconducting proximity effect in InAs nanowires (2018)
  • Author(s): 松尾貞茂
  • Organizer: Topological Materials Science Seminar (81)
  • Invited
• [Presentation] Towards entanglement transfer from a single photon pair to a single electron-photon pair using spin-resolved light hole excitation (2018)
  • Author(s): K. Kuroyama, C. Y. Chang, J. Muramoto, S. R. Valentin, A. Ludwig, A. D. Wieck, , S. Matsuo, A. Oiwa and S. Tarucha
  • Organizer: International Conference on Integrated Quantum Photonics2018
  • Int'l Joint Research
• [Presentation] 超伝導接合における非局所効果とマヨラナ粒子の探索 (2018)
  • Author(s): 松尾貞茂
  • Organizer: 第8回QUATUO研究会
  • Invited
• [Presentation] トポロジカル絶縁体(Bi1-xSbx)2Te3のジョセフソン接合を流れる超伝導電流のゲート制御 (2018)
  • Author(s): 松尾貞茂武重有祐, 松尾貞茂, Russell S. Deacon, 上田健人, 佐藤洋介, Yi-Fan Zhao, Ling Zhang, Cui-Zu Chang, 石橋幸治, 樽茶清悟
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] InAs二重ナノ細線を用いた一次元伝導体におけるクーパー対分離の磁場依存性 (2018)
  • Author(s): 上田健人、松尾貞茂、鎌田大、佐藤洋介、武重有祐、K. Li, S. Jeppesen,L. Samuelson, H. Q. Xu, 樽茶清悟
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] GaAs横型量子ドットにおけるスピン分離した軽い正孔の共鳴光学励起による単一光子偏光から電子スピンへの量子状態転写の実証 (2018)
  • Author(s): 黒山和幸, 村本丈, 部谷謙太郎, Marcus Larsson, 藤田高史, Sascha R. Valentin，Arne Ludwig，Andreas D. Wieck, 松尾貞茂，大岩顕，樽茶清悟
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] GaAs 横型量子ドットにおけるスピン－格子相互作用を介したフォノンによる電子スピン反転の実時間測定 (2018)
  • Author(s): 黒山和幸, 松尾貞茂, 村本丈, Sascha R. Valentin，Arne Ludwig，Andreas D. Wieck，都倉康弘，樽茶清悟
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] Observation of ballistic Cooper pair splitting (2018)
  • Author(s): K. Ueda , S. Matsuo, H. Kamata, Y. Sato, Y. Takeshige K. Li, S. Jeppesen, L. Samuelson, H. Q. Xu and S.Tarucha
  • Organizer: 8th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Full Counting Statistics of Pauli Spin Blockade in a GaAs double quantum dot (2018)
  • Author(s): S.Matsuo, K.Kuroyama, S.Yabunaka, S.R.Valentin, A. Ludwig, A. Wieck, S.Tarucha
  • Organizer: 8th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Toward entanglement transfer between photon pairs to electron-photon pairs with Zeeman-resolved light hole. (2018)
  • Author(s): C. -Y. Chang, K. Kuroyama, S. Matsuo, S. R. Valentin, A. Ludwig, A. D. Wieck, A. Oiwa, and S. Tarucha
  • Organizer: 8th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Shapiro response of gate-tunable Josephson junctions on (Bi1-xSbx)Te3 thin film (2018)
  • Author(s): Y.Takeshige, S.Matsuo, R.S.Deacon, K.Ueda, Y.Sato, Yi-Fan Zhao, Ling Zhang, Cui-Zu Chang, K.Ishibashi, S.Tarucha
  • Organizer: 8th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Strong Electron-Electron Interactions of Tomonaga?Luttinger Liquid observed in InAs Quantum Wires (2018)
  • Author(s): Yosuke Sato,Sadashige Matsuo, Chen-Hsuan Hsu, Kento Ueda, Yuusuke Takeshige, Hiroshi Kamata, Joon Sue Lee, Borzoyeh Shojaei, Javad Shabani,Chris Palmstr?m,Yasuhiro Tokura,Peter Stano,Daniel Loss,and Seigo Tarucha
  • Organizer: 8th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Phonon-induced enhancement of spin flip process in a GaAs double quantum dot (2018)
  • Author(s): K. Kuroyama, S. Matsuo, J. Muramoto, S. R. Valentin, A. Ludwig, A. D. Wieck, Y. Tokura, S. Tarucha
  • Organizer: 8th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Quantum state conversion from a single photon polarization to a single electron spin using spinresolved light hole excitation (2018)
  • Author(s): K. Kuroyama , S. Matsuo, M. Larsson , K. Heya , J. Muramoto , T. Fujita , S.R. Valentin , A. Ludwig , A.D. Wieck , A. Oiwa , S. Tarucha
  • Organizer: 34th International Conference on the Physics of Semiconductors
  • Int'l Joint Research
• [Presentation] Observation of Cooper pair splitting in a ballistic Josephson junction through double InAs nanowires (2018)
  • Author(s): Kento Ueda, Sadashige Matsuo, Hiroshi Kamata, Yosuke Sato, Yusuke Takeshige, Kan Li, Soren Jeppesen, Lars Samuelson, Hong-qi Xu, Seigo Tarucha
  • Organizer: 34th International Conference on the Physics of Semiconductors (ICPS2018)
  • Int'l Joint Research / Invited
• [Presentation] Tomonaga-Luttinger liquid behaviour in 1D electron system fabricated from InAs Quantum well holding strong spin-orbit interaction (2018)
  • Author(s): Yosuke Sato, Sadashige Matsuo, Chen-Hsuan Hsu, Peter Stano, Daniel Loss, Kento, Ueda, Yuusuke Takeshige, Hiroshi Kamata, Joon Sue Lee, Borzoyeh Shojaei, Javad Shabani, Christopher Palmstrom, Yasuhiro Tokura, Seigo Tarucha
  • Organizer: 34th International Conference on the Physics of Semiconductors (ICPS2018)
  • Int'l Joint Research
• [Presentation] Evaluation of Josephson Vortex Core Size Induced in Corbino-geometry Josephson Junctions (2018)
  • Author(s): Matsuo Sadashige , Tateno Mizuki , Sato Yosuke, Ueda Kento, Takeshige, Yusuke, Kamata Hiroshi, Lee Joon Sue, Shojaei Borzoyeh, Palmstr?m Christopher J. , Tarucha Seigo,
  • Organizer: 20th International Conference on Superlattices, Nanostructures and Nanodevices (ICSNN)
  • Int'l Joint Research
• [Remarks] 初めてクーパー対を2本の細線に弾道的に分離 －1次元電子系を用いた量子情報処理技術の新展開－
  • URL: https://www.riken.jp/press/2019/20191005_1/index.html
• [Remarks] Device splits and recombines
  • URL: https://www.riken.jp/en/news_pubs/research_news/rr/20191227_2/index.html