Exploring the novel quantum electronic physics in solid state using spatial control of paired quantum states

2017 Fiscal Year Annual Research Report

• Project/Area Number: 26220710
• Research Institution: The University of Tokyo
• Principal Investigator: 樽茶 清悟 東京大学, 大学院工学系研究科(工学部), 教授 (40302799)
• Co-Investigator(Kenkyū-buntansha): 山本 倫久 東京大学, 大学院工学系研究科(工学部), 特任准教授 (00376493) ; 大岩 顕 大阪大学, 産業科学研究所, 教授 (10321902) ; 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): 2014-05-30 – 2019-03-31
• Keywords: 3スピン量子ビット / 高速ラビ振動 / 電子対分離 / 超伝導－ナノ 細線接合 / もつれ光子対 / 量子状態変換

Outline of Annual Research Achievements

（1）磁石法によるゲート高速化、同位体制御Siによるデコヒーレンス圧縮により量子ゲート忠実度99.93%（世界最高値）を達成した。この値は、誤り耐性閾値を超えただけでなく、超伝導ビットに匹敵する値として世界的に注目されている。この他3重GaAs量子ドットによるCPHASEゲート、交換相互作用の制御による高速化法を開発した。さらに、準安定状態を利用した量子もつれの高忠実度（99.5%）読み出し、3角形3重量子ドットの新構造開発に成功した。
（2）表面弾性波で動く量子ドット中の２電子分離効率を正確に評価するため、電流雑音測定系を改良したが、未だ必要な精度には達していない。
グラフェンのクーパー対分離に関して量子ホール状態を介した超伝導流に集中して取り組んだ。異なる形状のジョセフソン接合の超伝導流を測定し、接合幅の増大による超伝導流の抑制を観測した。これは端へのクーパー対分離を支持する。
（３）並列二重ナノ細線と超伝導体の良質なジョセフソン接合で各細線の弾道的電子輸送のゲート制御に成功した。また、ドットを介さない1次元電子系でのクーパー対分離を初めて実証した。InAs細線の電圧電流特性からラッティンジャー液体の特徴を観測し、定量評価した。BiSbTeとAlのジョセフソン接合の超伝導電流のゲート操作に成功した。バッファ層厚の調整によりInSb量子井戸の高品質化を行った。欠陥由来の伝導を抑制することで、アンドープで高抵抗試料が得られるようになった。ＴＥＭ観察でも貫通転位の抑制が確認できている。
（４）ゼーマン分裂軽い正孔の選択励起に成功し、単一光子偏光から電子スピンへの量子転写をスピン閉塞の実時間単発読み出しにより実証した。また、もつれ光子対源の狭帯域化を行った。重い正孔からの高効率量子変換を目指し、(110)GaAs量子井戸による横型単一量子ドットを形成し、電荷計による電荷検出に成功した。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

（１）デコヒーレンスに関しては世界最高ゲート忠実度99.93%を達成した。これは、当初目標の誤り耐性閾値99%を大きく超えており、今後の同技術の発展性を担保する。また、3重量子ドットでのCPHASE、QNDの制御方法を改善し、前者では高速化、後者では高忠実度化の技術指針を得た。Si量子ドットでの忠実度は当初の計画以上の進捗、量子もつれ状態の高忠実度読み出しは当初の予定外の成果である。
（２）電子対の量子電子光学実験に関しては、電流雑音測定が難航しているものの、これは予想させた困難であり、引き続き取り組むことによって分離効率を評価できるはずである。
グラフェンを用いたクーパー対分離は、量子ホール状態を介した超伝導流のメカニズムが徐々に明らかになっており、端への分離を改めて示唆する結果が得られている。
（３）並列二重ナノ細線でのクーパー対分離の結果は、量子もつれ相関をもつ電子スピン対の新たな生成機構を示すほか、二つのナノ細線が異なるスピン軌道相互作用を持つ際にはマヨラナ粒子を無磁場で実現できるため、新たなマヨラナ粒子の実験舞台を提供する。非常に重要な結果である。また、BSTに関してもすでに超伝導電流が得られており、マヨラナ粒子の実証を目指したACジョセフソン効果の実験へとつながる。高移動度InSb2次元電子の実現と超伝導接合の作製は遅れているが、高品質化は着実に進展している。
（４）当初から提案の、光子からGaAs量子ドット電子スピンへの量子状態転写が実証できたことから非常に順調であると考える。さらに、光子対源の狭帯域化は量子もつれ相関の転写実験に繋がる重要な結果であり、やはり順調に進展している。当初予定していなかった(110)GaAs基板上の量子ドットの形成に世界で初めて成功したことで、高効率光子―電子スピン変換の道筋が経ちつつあり、もつれ変換にも貢献する成果を挙げることができた。

Strategy for Future Research Activity

（１）最終年度に向けて3重ドットを用いたCPHASE、QNDの性能評価、断熱遷移を利用した非局所量子もつれ、及びそれを基本原理とする量子テレポーテーション技術を開発する。また、５重量子ドットの電子状態制御技術の高度化と電子相関現象の探索、及びH29年度に達成したSi量子ドットでの量子もつれ操作の実現に取り組む。
（２）表面弾性波で動く量子ドット中の電子対を分離させる実験に関しては、より高い電流値（電流雑音値）が得られるようにIDTや高周波回路のデザインを変更し、低温アンプを組み込んだ電流雑音測定を新たに立ち上げて分離効率の評価に再び取り組む。グラフェン超伝導接合に関しては、ジョセフソン接合における量子干渉の磁場周期の異常の要因解明に引き続き取り組む。
（３）並列二重ナノ細線でのクーパー対分離の微視的機構の解明のため、超伝導体とナノ細線の近接領域をゲート制御できるデバイスを作製する。BiSbTeのジョセフソン接合で実現するSQUIDで電流位相関係の直接測定を行い、トポロジカル超伝導性が反映されていることを解明する。InAs量子細線では、量子井戸上のゲート制御した量子細線の測定からスピン軌道相互作用によるラッティンジャー液体への影響を解明する。来年度はドーピングの制御を工夫し、さらなる高移動度化を図るとともに、まずInSbポイントコンタクトの1次元伝導性を確認した後、超伝導接合を作製し、伝導度測定からマヨラナ粒子の探索を試みる。
（４）もつれ光子対の片方の光子を量子ドットに照射して量子状態転写を行い、電子スピンと光子偏光との間に量子もつれ相関を転写する実験を行う。実証には昨年度用いたスピンの単発読み出し法と光子と電子の同時検出法を用いる。(110)GaAs横型量子ドットを使って、重い正孔からの量子状態転写の実証を目指し、励起効率が軽い正孔励起に比べて向上することを実証する。

Research Products

• [Journal Article] Equal-Spin Andreev Reflection on Junctions of Spin-Resolved Quantum Hall Bulk State and Spin-Singlet Superconductor (2018)
  • Author(s): Matsuo Sadashige、Ueda Kento、Baba Shoji、Kamata Hiroshi、Tateno Mizuki、Shabani Javad、Palmstrm Christopher J.、Tarucha Seigo
  • Journal Title: SCIENTIFIC REPORTS Volume: 8 Pages: 3454
  • DOI: 10.1038/s41598-018-21707-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 量子ドットを用いた量子情報デバイス (2018)
  • Author(s): 樽茶清悟
  • Journal Title: 応用物理 Volume: 2 Pages: 88-99
  • Peer Reviewed
• [Journal Article] A quantum-dot spin qubit with coherence limited by charge noise and fidelity higher than 99.9% (2017)
  • Author(s): Yoneda Jun、Takeda Kenta、Otsuka Tomohiro、Nakajima Takashi、Delbecq Matthieu R.、Allison Giles、Honda Takumu、Kodera Tetsuo、Oda Shunri、Hoshi Yusuke、Usami Noritaka、Itoh Kohei M.、Tarucha Seigo
  • Journal Title: NATURE NANOTECHNOLOGY Volume: 13 Pages: 102～106
  • DOI: 10.1038/s41565-017-0014-x
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Single electron-photon pair creation from a single polarization-entangled photon pair (2017)
  • Author(s): Kuroyama Kazuyuki、Larsson Marcus、Matsuo Sadashige、Fujita Takafumi、Valentin Sascha R.、Ludwig Arne、Wieck Andreas D.、Oiwa Akira、Tarucha Seigo
  • Journal Title: SCIENTIFIC REPORTS Volume: 7 Pages: 16968
  • DOI: 10.1038/s41598-017-16899-w
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Gate tunable parallel double quantum dots in InAs double-nanowire devices (2017)
  • Author(s): Baba S.、Matsuo S.、Kamata H.、Deacon R. S.、Oiwa A.、Li K.、Jeppesen S.、Samuelson L.、Xu H. Q.、Tarucha S.
  • Journal Title: APPLIED PHYSICS LETTERS Volume: 111 Pages: 233513～233513
  • DOI: 10.1063/1.4997646
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Non-universal transmission phase behaviour of a large quantum dot (2017)
  • Author(s): Edlbauer Hermann、Takada Shintaro、Roussely Grgoire、Yamamoto Michihisa、Tarucha Seigo、Ludwig Arne、Wieck Andreas D.、Meunier Tristan、Buerle Christopher
  • Journal Title: NATURE COMMUNICATIONS Volume: 8 Pages: 1710
  • DOI: 10.1038/s41467-017-01685-z
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Magnetic field inducing Zeeman splitting and anomalous conductance reduction of half-integer quantized plateaus in InAs quantum wires (2017)
  • Author(s): S. Matsuo, H. Kamata, S. Baba, R. S. Deacon, Ja Shabani, C. J. Palmstroslashm, and S. Tarucha
  • Journal Title: PHYSICAL REVIEW B Volume: 96 Pages: 201404
  • DOI: 10.1103/PhysRevB.96.201404
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Cotunneling spin blockade observed in a three-terminal triple quantum dot (2017)
  • Author(s): .A. Noiri, T. Takakura, T. Obata, T. Otsuka, T. Nakajima, J. Yoneda, and S. Tarucha
  • Journal Title: PHYSICAL REVIEW B Volume: 96 Pages: 155414
  • DOI: 10.1103/PhysRevB.96.155414
  • Peer Reviewed / Open Access
• [Journal Article] Higher-order spin and charge dynamics in a quantum dot-lead hybrid system (2017)
  • Author(s): Otsuka Tomohiro、Nakajima Takashi、Delbecq Matthieu R.、Amaha Shinichi、Yoneda Jun、Takeda Kenta、Allison Giles、Stano Peter、Noiri Akito、Ito Takumi、Loss Daniel、Ludwig Arne、Wieck Andreas D.、Tarucha Seigo
  • Journal Title: SCIENTIFIC REPORTS Volume: 7 Pages: 12201
  • DOI: 10.1038/s41598-017-12217-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A triangular triple quantum dot with tunable tunnel couplings (2017)
  • Author(s): Noiri A、Kawasaki K、Otsuka T、Nakajima T、Yoneda J、Amaha S、Delbecq M R、Takeda K、Allison G、Ludwig A、Wieck A D、Tarucha S
  • Journal Title: SEMICONDUCTOR SCIENCE AND TECHNOLOGY Volume: 32 Pages: 084004～084004
  • DOI: 10.1088/1361-6641/aa7596
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Robust Single-Shot Spin Measurement with 99.5% Fidelity in a Quantum Dot Array (2017)
  • Author(s): T. Nakajima, M. R. Delbecq, T. Otsuka, P. Stano, S. Amaha, J. Yoneda, A. Noiri, K. Kawasaki, K. Takeda, G. Allison, A. Ludwig, Andreas D. Wieck, Daniel Loss, and Seigo Tarucha
  • Journal Title: PHYSICAL REVIEW LETTERS Volume: 119 Pages: 017701
  • DOI: 10.1103/PhysRevLett.119.017701
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mesoscopic phase behavior in a quantum dot around crossover between single-level and multilevel transport regimes (2017)
  • Author(s): S. Takada, M. Yamamoto, C. Bäuerle, A. Ludwig, A. D. Wieck, and S. Tarucha
  • Journal Title: PHYSICAL REVIEW B Volume: 95 Pages: 241301
  • DOI: 10.1103/PhysRevB.95.241301
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Josephson Radiation from Gapless Andreev Bound States in HgTe-Based Topological Junctions (2017)
  • Author(s): R.S. Deacon, J. Wiedenmann, E. Bocquillon, F. Domiacutenguez, T.M. Klapwijk, P. Leubner, C. Bruumlne, E.M. Hankiewicz, S. Tarucha, K. Ishibashi, H. Buhmann, and L.W. Molenkamp
  • Journal Title: PHYSICAL REVIEW X Volume: 7 Pages: 021011
  • DOI: 10.1103/PhysRevX.7.021011
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Design of bull's eye structures on gate-defined lateral quantum dots (2017)
  • Author(s): Rio Fukai, Tomohiro Nakagawa, Haruki Kiyama and Akira Oiwa
  • Journal Title: Japanese Journal of Applied Physics Volume: 56 Pages: 04CK04 1~5
  • DOI: 10.7567/JJAP.56.04CK04
  • Peer Reviewed
• [Journal Article] “グラフェンのジョセフソン接合における超伝導流” （解説） (2017)
  • Author(s): 山本倫久、Ivan V. Berzenets、樽茶清悟
  • Journal Title: 日本物理学会誌 Volume: 72 Pages: 774-782
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Classical information transfer between distant quantum dots using individual electrons in fast moving quantum dots (2017)
  • Author(s): Hermelin Sylvain、Bertrand Benoit、Takada Shintaro、Yamamoto Michihisa、Tarucha Seigo、Ludwig Arne、Wieck Andreas D.、Buerle Christopher、Meunier Tristan
  • Journal Title: Physica Status Solidi Volume: 254 Pages: 1600673～1600673
  • DOI: 10.1002/pssb.201600673
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Charge Noise Limited Gate Fidelity > 99.9% of Spin Qubits with Si/SiGe Quantum Dots (2018)
  • Author(s): S. Tarucha
  • Organizer: APS March Meeting 2018
  • Int'l Joint Research / Invited
• [Presentation] High-Fidelity Quantum Gates with Quantum Dot Spins (2018)
  • Author(s): S. Tarucha
  • Organizer: Utokyo-ANU Worksyop on Quantum control and Electronic Materials and Devices
  • Invited
• [Presentation] Graphene Josephson Junctions with Narrowly Defined Trenches (2018)
  • Author(s): A. Seredinski, A. Draelos, M-T. Wei, C-T. Ke, T. Fleming, Y. Mehta, E. Mancil, H. Li, T. Taniguchi, K. Watanabe, S. Tarucha, M. Yamamoto, I. Borzenets, F. Amet, and G. Finkelstein
  • Organizer: APS March Meeting 2018
• [Presentation] Josephson Junctions in Graphene Constrictions in the Quantum Hall Regime (2018)
  • Author(s): M-T. Wei, A. Draelos, A. Seredinski, C-T. Ke, Y. Mehta, E. Mancil, T. Taniguchi, K. Watanabe, S. Tarucha, M. Yamamoto, I. Borzenets, F. Amet, and G. Finkelstein
  • Organizer: APS March Meeting 2018
• [Presentation] Supercurrent in Multi-Terminal Ballistic Graphene Josephson Junctions (2018)
  • Author(s): Draelos, M-T. Wei, A. Seredinski, C-T. Ke, H. Li, Y. Mehta, E. Mancil, T. Fleming, K. Watanabe, T. Taniguchi, S. Tarucha, M. Yamamoto, I. Borzenets, F. Amet, and G. Finkelstein
  • Organizer: APS March Meeting 2018
  • Int'l Joint Research
• [Presentation] Non-universal transmission phase behaviour of a large quantum dot (2018)
  • Author(s): H. Edlbauer, S. Takada, G. Roussely, M. Yamamoto, S. Tarucha, A. Ludwig, A.D. Wieck, T. Meunier, and C. Bauerle
  • Organizer: APS March Meeting 2018
  • Int'l Joint Research
• [Presentation] Enhanced coherence of a single-electron spin qubit in a frequency-locked loop (2018)
  • Author(s): 中島峻,川崎賢人,野入亮人,米田淳, P. Stano,大塚朋廣,武田健太,M. R. Delbecq,天羽真一, G. Allison, A. Ludwig, A. D. Wieck, D. Loss,樽茶清悟
  • Organizer: The 2nd International Symposium on Dynamics in Artificial Quantum Systems (DAQS2018)
  • Int'l Joint Research
• [Presentation] Different charge and spin dynamics in a quantum dot-lead coupled system (2018)
  • Author(s): 大塚朋廣, 中島峻, M. Delbecq, P. Stano, 天羽真一, 米田淳, 武田健太, G. Allison, 野入亮人, 伊藤匠, D. Loss, A. Ludwig, A. Wieck, 樽茶清悟
  • Organizer: The 2nd International Symposium on Dynamics in Artificial Quantum Systems (DAQS2018)
  • Int'l Joint Research
• [Presentation] A 99.9%-fidelity spin qubit in isotopically purified silicon with charge-noise-limited coherence (2018)
  • Author(s): 米田淳，武田健太, 大塚朋廣, 中島峻, Matthieu R. Delbecq, Giles Allison, 本田拓夢，小寺哲夫, 小田俊理， 星裕介, 宇佐美徳隆, 伊藤公平, 樽茶清悟
  • Organizer: The 2nd International Symposium on Dynamics in Artificial Quantum Systems (DAQS2018)
  • Int'l Joint Research
• [Presentation] Josephson emission of InAs nanowire Josephson junctions (2018)
  • Author(s): 鎌田 大, R. S. Deacon, 松尾貞茂, K. Li, H. Q. Xu, 石橋幸治, 樽茶清悟
  • Organizer: The 2nd International Symposium on Dynamics in Artificial Quantum Systems (DAQS2018)
  • Int'l Joint Research
• [Presentation] A two-qubit entangling gate between spin qubits of different kinds (2018)
  • Author(s): A. Noiri, T. Nakajima, J. Yoneda, M. R. Delbecq, P. Stano, T. Otsuka, K. Takeda, S. Amaha, G. Allison, K. Kawasaki, A. Ludwig, A. D. Wieck, D. Loss, and S. Tarucha
  • Organizer: The 2nd International Symposium on Dynamics in Artificial Quantum Systems (DAQS2018)
  • Int'l Joint Research
• [Presentation] 人工原子分子による量子情報エレクトロニクス (2018)
  • Author(s): 樽茶清悟
  • Organizer: 第65回応用物理学会春季学術講演会
  • Invited
• [Presentation] Enhanced coherence of a single-electron spin qubit by realtime probing of magnetic noise (2018)
  • Author(s): A. Noiri, T. Nakajima, K. Kawasaki, J. Yoneda, P. Stano, T. Otsuka, K. Takeda, M. R. Delbecq, S. Amaha, G. Allison, A. Ludwig, A. D. Wieck, D. Loss and S. Tarucha
  • Organizer: ImPACT第４回全体会議
• [Presentation] 超伝導体Al-並列二重InAsナノ細線-超伝導体Alデバイスでの電子輸送のゲート操作 (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: 日本物理学会第73回年次大会
• [Presentation] InAs量子井戸に形成された1次元電子系の朝永－ラッティンジャー液体的性質 (2018)
  • Author(s): 佐藤洋介, 松尾貞茂, 上田健人, 武重有祐, 鎌田大, J. S. LeeC.B. Shojaei, C. Palmstrom, 都倉康弘, 樽茶清悟
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] シリコン量子ドットにおける２スピン同時検出 (2018)
  • Author(s): 米田淳, 武田健太, 野入亮人, 中島峻, 大塚朋廣, Sen Li, 小寺哲夫A, 樽茶清悟
  • Organizer: 日本物理学会・第73回年次大会
• [Presentation] 異種スピン量子ビット間の制御位相ゲート (2018)
  • Author(s): 野入亮人, 中島峻, 米田淳, M. R. Delbecq, P. Stano, 大塚朋廣, 武田健太, 天羽真一, G. Allison, 川崎賢人, A. Ludwig, A. D. Wieck, D. Loss, 樽茶清悟
  • Organizer: 日本物理学会・第73回年次大会
• [Presentation] InAs量子細線ジョセフソン接合における高周波輸送特性 (2018)
  • Author(s): 鎌田 大, R. S. Deacon, 松尾貞茂, 上田健人, K. Li, H. Q. Xu, 樽茶清悟
  • Organizer: 日本物理学会・第73回年次大会
• [Presentation] ベイズ推定を用いた量子ドット電荷計の信号解析 (2018)
  • Author(s): 大塚朋廣, 永安修也,中島峻, Matthieu Delbecq, 米田淳, 武田健太, 野入亮人, Sen Li, 伊藤匠, 樽茶清悟
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] Measurement of spin funnels in a physically-defined pMOS silicon double quantum dot (2018)
  • Author(s): M. Marx, J. Yoneda, T. Otsuka,K. Takeda, Y. Yamaoka, T. Nakajima, S. Li, A. Noiri, T. Kodera, S. Tarucha
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] Single-shot measurement of quantum state transfer from photon polarization to electron spin (2018)
  • Author(s): S. Matsuo, K. Kuroyama, J. Muramoto, K. Heya, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S.Tarucha
  • Organizer: 平成29年度スピン変換年次報告会
• [Presentation] 単一ヘテロ接合構造上に作製した表面プラズモンアンテナの特性評価 (2018)
  • Author(s): 深井利央, 中川智裕, 酒井裕司, 木山治樹, 大岩顕
  • Organizer: 日本物理学会 第73回年次大会
• [Presentation] 量子ドットを含む横型スピンバルブ構造の作製と測定 (2018)
  • Author(s): 東出世羽, 木山治樹, 長井奈緒美, 沖宗一郎, 山田晋也, 浜屋宏平, 平川一彦, 大岩顕
  • Organizer: 日本物理学会 第73回年次大会
• [Presentation] SiGe自己形成量子ドットを用いた単一正孔トランジスタの作製と量子輸送現象 (2018)
  • Author(s): 川口紀俊, 田中萌, 敷島稜紀, 木山治樹, Mario Bamesreiter, Dominique Bougeard, 大岩顕
  • Organizer: 日本物理学会 第73回年次大会
• [Presentation] Characterization of a surface plasmon antenn fabricated on a single heterojunction structure (2018)
  • Author(s): Rio Fukai, Tomohiro Nakagawa, Yuji Sakai, Haruki Kiyama, and Akira Oiwa
  • Organizer: ナノスピン変換科学平成29年度年次報告会
• [Presentation] Fabrication and hole transport of SiGe self-assembled quantum dot devices (2018)
  • Author(s): K. Kawaguchi, M. Tanaka, R. Shikishima, H. Kiyama, M. Bamesreiter, D. Bougeard, and A. Oiwa
  • Organizer: ナノスピン変換科学平成29年度年次報告会
• [Presentation] Feedback Control of Spin Decoherence in Quantum Dots (2017)
  • Author(s): S. Tarucha
  • Organizer: 5th Workshop on Physics between Ecole Normale Superieure
  • Int'l Joint Research / Invited
• [Presentation] Dephasing and gate fidelity of spin qubits with GaAs and Si (2017)
  • Author(s): S. Tarucha
  • Organizer: The 3rd Conference and Workshop on Spin-Based Quantum Information Processing
  • Int'l Joint Research / Invited
• [Presentation] Spin Dephasing and its Suppression in GaAs and Si Quantum Dots (2017)
  • Author(s): S. Tarucha
  • Organizer: International Workshop on Recent Experimental Progress in Semiconductor Qbits
  • Int'l Joint Research / Invited
• [Presentation] Versatile spin controls with multiple quantum dots:Multiple qubits, QND, and entanglement transfer (2017)
  • Author(s): S. Tarucha
  • Organizer: Advances in Quantum Transport in Low Dimentional systems
  • Int'l Joint Research / Invited
• [Presentation] QND spin measurement and CPHASE with exchange-coupled two qubits of different kinds: a spin-1/2 qubit and a singlettriplet qubit (2017)
  • Author(s): S. Tarucha
  • Organizer: 28th International Conference on Low Temperature Physics
  • Int'l Joint Research / Invited
• [Presentation] Introduction to Quantum information:Essentials & Spin Qubits Ⅰ/Ⅱ (2017)
  • Author(s): S. Tarucha
  • Organizer: SAWtrain Summer School
  • Int'l Joint Research / Invited
• [Presentation] Spin Dephasing and its Suppres sion in Quantum Dots (2017)
  • Author(s): S. Tarucha
  • Organizer: The 2017 Frontiers in Quamtum Materials ona Devices
  • Int'l Joint Research / Invited
• [Presentation] Suppression of quantum dephasing and QND spin readout with quantum dots (2017)
  • Author(s): S. Tarucha
  • Organizer: Quantum Information Workshop 2017
  • Int'l Joint Research / Invited
• [Presentation] Experimental study of exotic transport in superconductor-semiconductor hybrid systems (2017)
  • Author(s): S. Matsuo,S. Baba, Y. Sato, K. Ueda, H. Kamata, S. Tarucha
  • Organizer: The second international conference on Topological Orders and Emergent Spacetime on Quantum Simulators
  • Int'l Joint Research / Invited
• [Presentation] Observation of Cooper pair splitting from superconductor to parallel coupled two InAs nanowires (2017)
  • Author(s): S. Matsuo,S. Baba, C. Juenger, Y. Sato, K. Li, H.Q. Xu, C. Schonenberger, A. Oiwa, S. Tarucha
  • Organizer: Japan-China International Workshop on Quantum Technologies2017
  • Int'l Joint Research / Invited
• [Presentation] Governing energies of graphene Josephson junctions from dirty to ultra-clean regimes (2017)
  • Author(s): I. BorzenetsF. Amet, C. Ting Ke, A. Draelos, K. Watanabe, T. Taniguchi ,Y. Bomze, G. Finkelstain, M. Yamamoto, S. Tarucha
  • Organizer: Superstripes2017
  • Int'l Joint Research / Invited
• [Presentation] Experimental Observation of Andreev Reflection on Junctions of Spin-resolved Quantum Hall Bulk State and Superconductor (2017)
  • Author(s): S. Matsuo, K. Ueda, S. Baba, H. Kamata, T. Mizuki, J. Shabani, C. Palmstrom, and S. Tarucha
  • Organizer: TOP-SPIN 3: Spin and Topological Phenomena in Nanostructures - Towards Topological Materials Science
  • Int'l Joint Research / Invited
• [Presentation] Probing Dynamics of Local Electronic States in Nanostructures Utilizing Fast Quantum Dot Probes (2017)
  • Author(s): T. Otsuka, T. Nakajima, M. R. Delbecq, P. Stano , S. Amaha, J. Yoneda , K. Takeda, G. Allison , A. Noiri, T. Ito , D. Loss , A. Ludwig, A. D. Wieck , S. Tarucha
  • Organizer: International Symposium on Fluctuation and Structure out of Equilibrium 2017
  • Int'l Joint Research
• [Presentation] A controlled-phase gate between spin qubits of different kinds (2017)
  • Author(s): A. Noiri, T. Nakajima, J. Yoneda, M. R. Delbecq, P. Stano, T. Otsuka, K. Takeda, S. Amaha, G. Allison, K. Kawasaki, A. Ludwig, A. D. Wieck, D. Loss, and S. Tarucha
  • Organizer: The 3rd Conference and Workshop on Spin-Based Quantum Information Processing (Spin Qubit 3)
  • Int'l Joint Research
• [Presentation] An isotopically-enriched silicon spin qubit with >99.9% fidelity and charge-noise-limited coherence (2017)
  • Author(s): 米田淳，武田健太, 大塚朋廣, 中島峻, M. R. Delbecq, G. Allison, 本田拓夢，小寺哲夫, 小田俊理， 星裕介, 宇佐美徳隆、伊藤公平、樽茶清悟
  • Organizer: The 3rd Conference and Workshop on Spin-Based Quantum Information Processing (Spin Qubit 3)
  • Int'l Joint Research
• [Presentation] Charge-noise-limited coherence and three-nines fidelity of an enriched Si/SiGe spin qubit (2017)
  • Author(s): J. Yoneda, K. Takeda, T. Otsuka, T. Nakajima, M. R. Delbecq, G. Allison, T. Honda, T. Kodera, S. Oda, Y. Hoshi, N. Usami, K. M. Itoh, S. Tarucha
  • Organizer: 2017 Silicon Quantum Electronics Workshop
  • Int'l Joint Research
• [Presentation] Microwave induced frequency shift and its quadrature compensation for Si/SiGe spin qubits (2017)
  • Author(s): K. Takeda, J. Yoneda, T. Otsuka, T. Nakajima, M. R. Delbecq, G. Allison, J.Kamioka, T. Honda, T. Kodera, S. Oda, Y. Hoshi, N. Usami, K. M. Itoh, S. Taruch
  • Organizer: 2017 Silicon Quantum Electronics Workshop
  • Int'l Joint Research
• [Presentation] Andreev reflection in junctions of spin-resolved InAs quantum Hall bulk state and superconductor NbTi (2017)
  • Author(s): S. Matsuo, K. Ueda, S. Baba, H. Kamata, M. Tateno, J. Shabani, C. J. Palmstrom, S. Tarucha
  • Organizer: 28th International Conference on Low Temperature Physics
  • Int'l Joint Research
• [Presentation] Observation of quantum state transfer from polarized photons to electron spins using optical Pauli blockade effect (2017)
  • Author(s): K. Kuroyama, M. Larsson, S. Matsuo, T. Fujita, S. R. Valentin, A. Ludwig, A.D. Wieck, A. Oiwa, S. Tarucha
  • Organizer: 28th International Conference on Low Temperature Physics
  • Int'l Joint Research
• [Presentation] Observation of Crossed Andreev Reflection on superconductor-InAs double nanowire junction device (2017)
  • Author(s): S. Baba, C. Juenger, Y. Sato, S. Matsuo, A. Baumgatner, H. Kamata, K. Li, H.Q. Xu, C. Schonenberger, S. Tarucha
  • Organizer: EP2DS-22
  • Int'l Joint Research
• [Presentation] Coherent electron transport driven by surface acoustic wave (2017)
  • Author(s): R. Ito, S. Takada,M.Yamamoto, C.Bouerle,A.D.Wieck, S.Tarucha
  • Organizer: EP2DS-22
  • Int'l Joint Research
• [Presentation] Four Single-spin Rabi Oscillations in a Quadruple Quantum Dot (2017)
  • Author(s): T. Ito, T. Otsuka, T. Nakajima, M. R. Delbecq, S. Amaha, J. Yoneda, K. Takeda, A. Noiri, G. Allison, A. Ludwig, A. D. Wieck, and S. Tarucha
  • Organizer: EP2DS-22
  • Int'l Joint Research
• [Presentation] Josephson radiation of InAs nanowire Josephson junctions (2017)
  • Author(s): H. Kamata, R. S. Deacon, S. Matsuo, S. Baba, K. Li, H. Q. Xu, K. Ishibashi, and S. Tarucha
  • Organizer: EP2DS-22
  • Int'l Joint Research
• [Presentation] Enhancing coherence of a single electron spin with adaptive control (2017)
  • Author(s): T. Nakajima, K. Kawasaki, A. Noiri, J. Yoneda, P. Stano, T. Otsuka, K. Takeda, M. R. Delbecq, G. Allison, A. Ludwig, A. D. Wieck, D. Loss, and S. Tarucha
  • Organizer: EP2DS-22
  • Int'l Joint Research
• [Presentation] Difference in Charge and Spin Dynamics in a Quantum Dot-Lead Hybrid System (2017)
  • Author(s): T. Otsuka, T. Nakajima, M. R. Delbecq, P. Stano, S. Amaha, J. Yoneda, K. Takeda, G. Allison, A. Noiri, T. Ito, D. Loss, A. Ludwig, A. D. Wieck, and S. Tarucha
  • Organizer: EP2DS-22
  • Int'l Joint Research
• [Presentation] Quantum non-demolition readout of a single spin in a quantum dot (2017)
  • Author(s): A. Noiri, T. Nakajima, J. Yoneda, T. Otsuka, K. Takeda, M. R. Delbecq, K. Kawasaki, G. Allison, A. Ludwig, A. D. Wieck and S. Tarucha
  • Organizer: EP2DS-22
  • Int'l Joint Research
• [Presentation] Cooper-pair splitter realized in superconductor-InAs double nanowire junctions (2017)
  • Author(s): Y.Sato, S. Baba, C. Juenger, S. Matsuo, A. Baumgartner, H. Kamata, K. Li, H.Q. Xu, C. Schoenenberger, S. Tarucha
  • Organizer: TopoMat2017
  • Int'l Joint Research
• [Presentation] 量子ドットスピン量子ビットの高忠実度化と多重化 (2017)
  • Author(s): 樽茶清悟
  • Organizer: 第22回スピン工学の基礎と応用PASPS-22
  • Invited
• [Presentation] A two-qubit gate between spin qubits of different kinds (2017)
  • Author(s): A. Noiri, T. Nakajima, J. Yoneda, M. R. Delbecq, P. Stano, T. Otsuka, K. Takeda, S.Amaha, G. Allison, K. Kawasaki, A. Ludwig, A. D. Wieck, D. Loss, and S. Tarucha
  • Organizer: CREST「量子技術」の12 月領域会議（第2 回シンポジウム)
• [Presentation] 並列二重InAsナノ細線と超伝導体アルミニウムの接合デバイスにおける電子輸送制御 (2017)
  • 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,K. Deppert, L. Samuelson,H. Q. Xu,樽茶清悟
  • Organizer: 第22回スピン工学の基礎と応用PASPS-22
• [Presentation] InAs量子井戸にエッチング形成された1次元系の朝永―ラッティンジャー液体的性質 (2017)
  • Author(s): 佐藤洋介,松尾貞茂,上田健人,武重有祐,鎌田 大,J. S. Lee,B. Shojaei, C. Palmstr?m,都倉康弘,樽茶清悟
  • Organizer: 第22回スピン工学の基礎と応用PASPS-22
• [Presentation] 偏光もつれ光子対による単一光子-電子対の生成 (2017)
  • Author(s): 黒山和幸,Marcus Larsson,松尾貞茂1,藤田高史,Sacha R. Valentin, Arne Ludwig, Andreas D. Wieck, 大岩 顕,樽茶清悟
  • Organizer: 第22回スピン工学の基礎と応用PASPS-22
• [Presentation] InAs量子井戸/NbTi接合でのスピン分離した量子ホールバルク状態におけるア ンドレーエフ反射の観測 (2017)
  • Author(s): 松尾貞茂,上田健人,馬場翔二,鎌田 大,館野瑞樹,Javad Shabani,Chris J. Palmstrom,樽茶清悟
  • Organizer: 第22回スピン工学の基礎と応用PASPS-22
• [Presentation] Quantum nondemolition measurement of a single electron spin in a quantum dot (2017)
  • Author(s): A. Noiri, T. Nakajima, J. Yoneda, M. R. Delbecq, P. Stano, T. Otsuka, K. Takeda, S. Amaha, G. Allison, K. Kawasaki, A. Ludwig, A. D. Wieck, D. Loss, and S. Tarucha
  • Organizer: 第三回 理研-産総研 量子技術イノベーションコアWorkshop
• [Presentation] Coherence enhancement of a spin qubit by realtime probing of magnetic noise (2017)
  • Author(s): 中島峻, 川崎賢人, 野入亮人, 米田淳, P. Stano, 大塚朋廣, 武田健太, M. R. Delbecq,天羽真一, G. Allison, A. Ludwig, A. D. Wieck, D. Loss, 樽茶清悟
  • Organizer: 第三回 理研-産総研 量子技術イノベーションコアWorkshop
• [Presentation] Microwave induced frequency shift and its quadrature compensation for Si/SiGe spin qubits (2017)
  • Author(s): K. Takeda, J. Yoneda, T. Otsuka, T. Nakajima, M. R. Delbecq, G. Allison, J.Kamioka, T. Honda, T. Kodera, S. Oda, Y. Hoshi, N. Usami, K. M. Itoh, S. Tarucha
  • Organizer: 第三回 理研-産総研 量子技術イノベーションコアWorkshop
• [Presentation] 多量子ビットに向けた多重量子ドット素子中の電荷,スピン状態制御 (2017)
  • Author(s): 大塚朋廣, 伊藤匠, 中島峻, Matthieu Delbecq, 天羽真一, 米田淳, 武田健太, 野入亮人, Giles Allison, Arne Ludwig, Andreas D. Wieck, 樽茶清悟
  • Organizer: 第三回 理研-産総研 量子技術イノベーションコアWorkshop
• [Presentation] Al-InAs量子井戸から作製した超伝導接合の輸送特性 (2017)
  • Author(s): 松尾貞茂,館野瑞樹,馬場翔二,上田健人,佐藤洋介,鎌田大,Joon Sue Lee,Borzoyeh Shojaei,Christopher Palmstrom
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] 並列二重InAsナノ細線と超伝導体の接合におけるクーパー対分離の観測 (2017)
  • Author(s): Y. Sato, S. Baba, C. Juenger, Sadashige Matsuo, A. Baumgatner,Hiroshi Kamata , K. Li, H.Q. Xu, C. Schonenberger, A. Oiwa, S. Tarucha
  • Organizer: 日本物理学会2017年秋季大会
• [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.2 (2017)
  • Author(s): K. Kuroyama, Marcus Larsson, K.Yabe, Sadashige Matsuo, T.Fujita, Sascha R. Valentin, Arne Ludwig, Andreas D. Wieck, A. Oiwa, S. Tarucha
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] 量子ドット-電極結合系における電荷・スピンダイナミクス (2017)
  • Author(s): 大塚朋廣, 中島峻, M. Delbecq, P. Stano, 天羽真一, 米田淳, 武田健太, G. Allison, 野入亮人, 伊藤匠, D. Loss, A. Ludwig, A. D. Wieck, 樽茶清悟
  • Organizer: 日本物理学会・2017年秋季大会
• [Presentation] 同位体制御Si/SiGe単一電子スピンの1/f電荷揺らぎによる位相雑音 (2017)
  • Author(s): 米田淳，武田健太, 大塚朋廣, 中島峻, M. R. Delbecq, G. Allison, 本田拓夢，小寺哲夫, 小田俊理， 星裕介, 宇佐美徳隆,伊藤公平,樽茶清悟
  • Organizer: 日本物理学会・2017年秋季大会
• [Presentation] フィードバック制御による電子スピン位相緩和の抑制Ⅱ (2017)
  • Author(s): 野入亮人, 川崎賢人, 中島峻, 米田淳, P. Stano, 大塚朋廣, 武田健太, M. R. Delbecq, G. Allison, A. Ludwig, A. D. Wieck, D. Loss,樽茶清悟
  • Organizer: 日本物理学会・2017年秋季大会
• [Presentation] 量子細線ジョセフソン接合におけるジョセフソン雑音放射 (2017)
  • Author(s): 鎌田 大, R. S. Deacon, 松尾貞茂, 馬場翔二, K. Li, H. Q. Xu, 石橋幸治, 樽茶清悟
  • Organizer: 日本物理学会・2017年秋季大会
• [Presentation] Exclusive Excitation on Spin-Resolved Light Hole in a Gate Defined GaAs Quantum Dot (2017)
  • Author(s): S. Matsuo, K. Kuroyama, M. Larsson, K. Heya, T. Fujita, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S. Tarucha
  • Organizer: 平成29年度スピン変換研究会
• [Presentation] Probing Dynamics of Local Spin States in Nanostructures Utilizing Quantum Dot Probes (2017)
  • Author(s): 大塚朋廣, 中島峻, M. Delbecq, P. Stano, 天羽真一, 米田淳, 武田健太, G. Allison, 野入亮人, 伊藤匠, D. Loss, A. Ludwig, A. Wieck, 樽茶清悟
  • Organizer: 平成29年度スピン変換研究会
• [Presentation] Cooper pair splitting on a junction of an Al superconductor and InAs double-nanowire (2017)
  • Author(s): Y. Sato, S. Baba, C. Juenger, S. Matsuo, A. Baumgatner, H. Kamata, K. Li , H.Q. Xu, C. Schonenberger, S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Josephson radiation of InAs nanowire Josephson junctions (2017)
  • Author(s): H. Kamata, R. S. Deacon, S. Matsuo, S. Baba, K. Li, H. Q. Xu, K. Ishibashi, and S. Tarucha
  • Organizer: 第8回半導体量子効果と情報の夏期研修会
• [Presentation] Surface acoustic wave driven electrons in tunnel-coupled wires (2017)
  • Author(s): R. Ito, S. Takada, C. B?uerle, A. Ludwig, A. D. Wieck, M. Yamamoto, and S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Towards RF charge sensing in pMOS DQD (2017)
  • Author(s): M. Marx, J. Yoneda, K. Takeda, T. Otsuka, S. Li, T. Nakajima, A. Noiri, T. Kodera, S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Towards electron-spin quantum teleportation in a triple quantum dot (2017)
  • Author(s): Y. Kojima, T. Nakajima, A. Noiri, J. Yoneda, T. Otsuka, K. Takeda, T. Ito, K. Kawasaki, A, A. Wieck, S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Towards cQED with triple quantum dots (2017)
  • Author(s): J. S. Rojas-Arias, T. Nakajima, M. Marx , A. Noiri, G. Allison, M. Delbecq, J. Yoneda, K. Takeda, T. Otsuka, S. Li , S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Towards electrical field tuning of topological crystalline insulator: SnTe (2017)
  • Author(s): Y. Takeshige, K. Ueda, Y. Sato, M. Kamata, R. Nakanishi, K. Miyauchi, R. Akiyama, S. Hasegawa, S. Matsuo, S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] The transport mechanism of supercurrents in the quantum Hall regime (2017)
  • Author(s): I. Borzenets, C.-T. Ke, F. Amet , G. Finkelstein, M. Yamamoto, S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Generation of a single electron-photon pair from a single polarization-entangled photon pair (2017)
  • Author(s): S. Matsuo, K. Kuroyama, M. Larsson, T. Fujita, S. R. Valentin, A. Ludwig, A. D. Wieck, A. Oiwa, S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Probing Dynamics of Local Electronic States in Nanostructures Utilizing Fast Quantum Dot Probes (2017)
  • Author(s): 大塚朋廣, 中島峻, M. Delbecq, P. Stano, 天羽真一, 米田淳, 武田健太, G. Allison, 野入亮人, 伊藤匠, D. Loss, A. Ludwig, A. Wieck, 樽茶清悟
  • Organizer: 第7回半導体量子効果と情報の夏期研修会
• [Presentation] Transient dynamics of an open quantum system based on gated GaAs quantum dots (2017)
  • Author(s): S. Li, T. Otsuka, G. Allison, A. Noiri, J. Yoneda, K. Takeda, T. Nakajima, A. Ludwig, A. D. Wieck, and S. Tarucha
  • Organizer: 第7回半導体量子効果と情報の夏期研修会
• [Presentation] Overcoming spin decoherence by feedback control (2017)
  • Author(s): 中島峻,川崎賢人A,野入亮人,米田淳,P. Stano,大塚朋廣,武田健太,Matthieu R. DelbecqB,Giles Allison,Arne LudwigC,Andreas D. WieckC,D. LossD,樽茶清悟
  • Organizer: 第8回半導体量子効果と情報の夏期研修会
• [Presentation] Probing Dynamics of Local Electronic States in Nanostructures by Quantum Dot Probes (2017)
  • Author(s): 大塚朋廣, 中島峻, M. Delbecq, P. Stano, 天羽真一, 米田淳, 武田健太, G. Allison, 野入亮人, 伊藤匠, D. Loss, A. Ludwig, A. Wieck, 樽茶清悟
  • Organizer: 新学術領域「ゆらぎと構造」第4回領域研究会
• [Presentation] Magnetotarnsport in narrow gap semiconductor InSb Quantum Wells (2017)
  • Author(s): Masaki Tada, Haruki Kiyama, Koichi Akahane and Akira Oiwa
  • Organizer: Spintech9
  • Int'l Joint Research
• [Presentation] Transport and optical properties of (110) GaAs quantum wells for photon-spin quantum state conversion using heavy hole states (2017)
  • Author(s): Tomohiro Nakagawa, Yuji Sakai, Rio Fukai, Haruki Kiyama, Julian Ritzmann, Arne Ludwig, Andreas D. Wieck, and Akira Oiwa
  • Organizer: Spintech9
  • Int'l Joint Research
• [Presentation] Design of Surface Plasmon Antennas on Gate-defined Lateral Quantum Dots (2017)
  • Author(s): Rio Fukai, Tomohiro Nakagawa, Haruki Kiyama, and Akira Oiwa
  • Organizer: Spintech9
  • Int'l Joint Research
• [Presentation] Kondo effect and superconducting transport in SiGe self-assembled quantum dots (2017)
  • Author(s): Kazutoshi Kagawaguchi, Haruki Kiyama, Mario Bamesreiter, Dominique Bougeard, and Akira Oiwa
  • Organizer: Spintech9
  • Int'l Joint Research
• [Presentation] Kondo effect in a self-assembled SiGe quantum dot (2017)
  • Author(s): Ryoki Shikishima, Haruki Kiyama,Kazutoshi Kagawaguchi, Mario Bamesreiter, Dominique Bougeard, and Akira Oiwa
  • Organizer: 18th International Conference on Modulated Semiconductor Structures (MSS-18)
  • Int'l Joint Research
• [Presentation] Kondo effect in a self-assembled SiGe quantum dot (2017)
  • Author(s): Ryoki Shikishima, Haruki Kiyama,Kazutoshi Kagawaguchi, Mario Bamesreiter, Dominique Bougeard, and Akira Oiwa
  • Organizer: 2017 Silicon Quantum Electronics Workshop
  • Int'l Joint Research
• [Presentation] SiGe自己形成量子ドットにおける近藤効果の観測 (2017)
  • Author(s): 敷島稜紀, 木山治樹, 川口紀俊, Mario Bamesreiter, Dominique Bougeard, 大岩顕
  • Organizer: 日本物理学会 2017年秋季大会
• [Presentation] InSb量子井戸の磁気輸送特性と量子ポイントコンタクトの作製 (2017)
  • Author(s): 多田誠樹, 大岩顕, 木山治樹, 赤羽浩一
  • Organizer: 日本物理学会 2017年秋季大会
• [Presentation] フォトニック結晶構造中のアンチドット格子系伝導 (2017)
  • Author(s): 酒井裕司, 木山治樹, 大岩顕, 高橋駿, 太田泰友, 岩本敏 荒川泰彦
  • Organizer: 日本物理学会 2017年秋季大会
• [Presentation] Single-shot ternary readout of electron spin states in a quantum dot coupled to quantum Hall edge states (2017)
  • Author(s): Haruki Kiyama
  • Organizer: JST-TU Delft Quantum Technology workshop
  • Int'l Joint Research
• [Presentation] Photon-electron spin conversion in gate-defined GaAs quantum dots and developing Poincare interface (2017)
  • Author(s): Akira Oiwa
  • Organizer: JST-TU Delft Quantum Technology workshop
  • Int'l Joint Research
• [Presentation] Transports in SiGe and InAs self-assembled quantum dots (2017)
  • Author(s): A. Oiwa, H. Kiyama, R. Shikishima, K. Kawaguchi, M. Bamesreiter, D. Bougeard, N. Nagai, K. Hirakawa
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Design of surface plasmon antennas on gate-defined lateral quantum dots (2017)
  • Author(s): Rio Fukai, Tomohiro Nakagawa, Haruki Kiyama, Akira Oiwa
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Anti-dot lattice transport in photonic crystal structures (2017)
  • Author(s): Yuji Sakai, Haruki kiyama, Akira Oiwa, Arne Ludwig, Andreas Wieck, Shun Takahashi, Yasutomo Ota, Satoshi Iwamoto, Yasuhiko Arakawa
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Electrical Transport in Low Dimensional Systems Fabricated in a (110) GaAs Quantum Well (2017)
  • Author(s): Tomohiro Nakagawa, Rio Fukai, Yuji Sakai, Haruki Kiyama, Julian Ritzmann, Arne Ludwig, Andreas D. Wieck, and Akira Oiwa
  • Organizer: International School and Symposium on nanoscale transport and photonics (ISNTT2017)
  • Int'l Joint Research
• [Presentation] Single-electron charge sensing in InAs self-assembled quantum dots (2017)
  • Author(s): H. Kiyama, N. Nagai, K. Hirakawa and A. Oiwa
  • Organizer: 平成29年度スピン変換研究会
• [Presentation] Anti-dot lattice transport in air-hole-type photonic crystal structures (2017)
  • Author(s): Yuji Sakai, Haruki kiyama, Akira Oiwa,Andreas Wieck, Arne Ludwig, Shun Takahashi, Yasutomo Ota, Satoshi Iwamoto, Yasuhiko Arakawa
  • Organizer: 平成29年度スピン変換研究会
• [Presentation] Photon-spin Poincar? interface using electron spins in quantum dots (2017)
  • Author(s): A. Oiwa
  • Organizer: JSPS Core-to-Core SANKEN Program, Purdue Seminar “Seminar for Sensing Technology by Nano Materials
  • Int'l Joint Research / Invited
• [Presentation] Kondo effect and superconducting transport in SiGe self-assembled quantum dot transistors (2017)
  • Author(s): Ryoki Shikishima, Kazutoshi Kagawaguchi, Haruki Kiyama, Mario Bamesreiter, Dominique Bougeard, and Akira Oiwa
  • Organizer: The second international conference on Quantum Information、Quantum Topological Orders and Emergent Spacetime on Quantum Simulators
  • Int'l Joint Research / Invited
• [Presentation] Photon-spin Poincar? interface using electron spins in quantum dots (2017)
  • Author(s): Akira Oiwa
  • Organizer: Workshop Advanced Material Sciences 2017
  • Int'l Joint Research / Invited
• [Presentation] グラフェンにおけるスピンバレートロニクス (2017)
  • Author(s): 山本倫久
  • Organizer: CUPALワークショップ「トポロジカル物質・原子層物質の新規物性」
  • Invited
• [Presentation] グラフェンの量子ホール状態を介した超伝導流 (2017)
  • Author(s): 山本倫久
  • Organizer: 日本物理学会
  • Invited
• [Presentation] Graphene-based superconductor electronics (2017)
  • Author(s): M. Yamamoto
  • Organizer: The 9th Conferences on Recent Progress in Graphene and Two-dimensional Materials Research (RPGR2017)
  • Int'l Joint Research / Invited
• [Presentation] Supercurrent through graphene-based Josephson junctions (2017)
  • Author(s): M. Yamamoto
  • Organizer: QTech 2017
  • Int'l Joint Research / Invited
• [Presentation] Graphene-based valleytronics and superconductor electronics (2017)
  • Author(s): M. Yamamoto
  • Organizer: 2nd EU flagship-Japan workshop
  • Int'l Joint Research / Invited
• [Presentation] Non-local transport in symmetry broken state of bilayer graphene under magnetic field (2017)
  • Author(s): M. Tanaka, Y. Shimazaki, I. Borzenets, T. Taniguchi, K. Watanabe, M. Yamamoto, and S. Tarucha
  • Organizer: The 9th Conferences on Recent Progress in Graphene and Two-dimensional Materials Research (RPGR2017)
  • Int'l Joint Research
• [Presentation] Transmission phase measurement of a large quantum dot (2017)
  • Author(s): H. Edlbauer, S. Takada, G. Roussely, M. Yamamoto, S. Tarucha, A. Ludwig, A. D. Wieck, T. Meunier and C. B?uerle
  • Organizer: EP2DS-22/MSS-18
  • Int'l Joint Research
• [Book] カーボンが創る未来社会 (2017)
  • Author(s): 藤田静雄 編著（山本倫久）
  • Total Pages: 141-156
  • Publisher: 丸善プラネット
  • ISBN: 978-4-86345-348-7
• [Remarks] Reducing noise in silicon quantum dots boosts calc
  • URL: http://www.riken.jp/en/research/rikenresearch/highlights/20180323_0057/
• [Remarks] Single electron-photon pair creation from a single
  • URL: http://www.t.u-tokyo.ac.jp/soee/press/setnws_201712061353194017790438.html
• [Remarks] Non-universal transmission phase behaviour of a la
  • URL: https://www.t.u-tokyo.ac.jp/foee/press/setnws_201711241138477590385009.html
• [Remarks] 電子波の位相変化は人工原子の内部構造を反映することを世界で初めて実証
  • URL: https://www.t.u-tokyo.ac.jp/foe/press/setnws_201711241130474371680739.html
• [Remarks] 大阪大学産業科学研究所 量子システム創成研究分野（大岩研究室）
  • URL: http://www.sanken.osaka-u.ac.jp/labs/qse/
• [Funded Workshop] Japan-China International Workshop on Quantum Technologies (QTech2017) (2017)