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

2015 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), 講師 (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 / 集団緩和抑制 / 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)3重量子ドットに関して高速測定の導入により量子もつれの集団位相緩和を一桁上改善できること、3電子の励起状態を利用して遠隔もつれ状態が制御できることを示した。4重量子ドットではスピン閉塞状態の制御、４スピンのコヒーレント回転を実現した。いずれも世界初の成果。加えて、磁石法によるスピン操作の精度向上、量子ホール状態を利用した新スピン選別、スピン閉塞を利用した核スピン偏極操作を提案、実証した。
(2)表面弾性波で動く量子ドット中の2電子を分離する実験において分離効率を正確に求めるための電流雑音測定を検討した。また、単一電子の伝送中にスピンが保存することを実験実証した。
弾道領域にある長いグラフェンのジョセフソン接合における臨界電流の振る舞いを実験的に解明した。また、同接合において、量子ホール状態を介した超伝導流を初めて観測した。これはクーパー対がグラフェンの両端を分離して流れることを意味する。
(3)トポロジカル絶縁体HgTeのジョセフソン接合によるマヨラナ実験を開始し、奇数番のシャピロステップが消失するという、マヨラナ状態の観測に成功した。高品質InAs量子井戸で作った細線で無磁場の半整数量子化伝導度プラトー、ゼーマン分裂を観測した。並列二重細線（自己形成）の作製技術を開発し、細線中の2重ドットの存在を確認した。また、InSb量子井戸の実験を開始し、安定な量子ポイントコンタクトの作製方法を確立した。
(4)GaAs量子ドットで光学スピン閉塞効果を観測し、光電子のコヒーレント生成を初めて確認した。さらに、もつれ光子対の片側で生成した電子と残りの光子の同時検出に成功した。また、重い正孔からの高効率量子状態転写のため、(110)GaAs量子井戸基板を作製して時間分解磁気光学効果と量子輸送の測定を開始し、また、並列InAs自己形成ドット接合では光生成単一検出のための電荷検出を実現した。

Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

(1)年度計画を全て達成し、それ以上に高速測定によるもつれ状態の集団位相緩和の予想を上回る大幅な改善、4重ドットでは、予定のスピンブロッケードを終えて、次年度計画である4スピン共鳴を達成、さらに新スピン選別法の提案と実証、新核スピン制御法の提案など、本課題の達成に向けて計画以上、計画外の成果を得た。
(2)単一電子スピンの伝送によって、単一電子スピントロニクスへの道が拓けてきた。
グラフェン－超伝導接合では、ジョセフソン接合の支配的なエネルギースケールに応じた臨界電流の振る舞いや量子ホール状態を介した超伝導流を初めて観測した。これらはいずれも超伝導デバイスの基本に関わり、今後の同分野における研究の道標となる重要な成果である。
(3)マヨラナ粒子に関しては世界的に実証実験が続いている。新たに始めたトポロジカル絶縁体HgTeの交流ジョセフソン効果の実験でマヨラナ粒子の新しい痕跡をとらえた。予想以上の成果である。InAs細線では、マヨラナ粒子観測の鍵とされる高品質化を達成した。同細線を用いて無磁場での半整数プラトーを観測した。これは長年の懸案である発現機構の解明に迫る重要な結果である。また、並列二重ナノ細線の評価はパラフェルミオン実験に重要なデータを提供している。InSb量子井戸基板の開発には予定より時間がかかったが、量子ポイントコンタクトの作製法はすでに確立できた。
(4)光子偏光から量子ドット中の電子スピンへの量子状態転写の実証に、光学スピン閉塞効果の観測という手法で成功した。これにより量子中継器に必要な3要素の一つを検証した。また、もつれ光子対から生成した電子と光子の同時検出は、スピンと光子偏光に角運動量相関を転写できることを示唆しており、今後のもつれ相関の転写、技術応用に極めて重要な結果である。加えて正孔からの量子状態転写の実証実験や量子ドット作製のための技術開発は計画にそって進んでいる。

Strategy for Future Research Activity

(1)27年度の成果を基に、さらなる多ビット化（４，５ビット化）の技術開発、3ビットによる論理ゲート実証とゲート操作忠実度の改善、多スピンもつれ制御、デコヒーレンス問題の本質的解消を可能にするシリコン材料への技術移植など、当初計画を上回る高いレベルでの課題達成に向けて研究を加速する。
(2)電子対分離に加えて、単一電子のスピンを伝送できることが確認できたので、これを用いた量子もつれの検証実験へと進む。グラフェン－超伝導接合の実験では、クーパー対分離の効率を高める実験に引き続き取り組む。その過程では、ホール効果（量子ホール効果、バレーホール効果）を利用したクーパー対分離も検討する。
(3)HgTeの実験を継続し、シャピロ実験の対となる、放出雑音電流測定によるマヨラナ粒子観測を目指す。超伝導-ナノ細線接合に関して、高品質量子井戸と超伝導体の接合品質を改善し、超伝導接合でのアンドレーエフ反射の観測を目指す。また、自己形成ナノ細線では、並列二重ナノ細線と超伝導体との接合デバイスを作製し、それぞれのナノ細線へのクーパー対分離現象の観測を行う。さらに、より高品質な超伝導半導体接合の実現のため、エピタキシャル成長された超伝導体半導体基板の微細加工技術を確立する。また、InSb量子井戸基板を用いで量子ポイントコンタクトを作製し、１次元伝導の観測を目指す。
(4)光子電子変換は、本年度得た光子電子の同時検出結果の解析を行い、光子電子の対生成の効率を評価する。さらに、微細加工技術を改良し、光子電子変換効率が向上するかを検証する。また、電荷検出時間の高速化を行い、電荷検出時間5 usecを達成する。時間分解磁気光学効果測定により(110)GaAs量子井戸において重い正孔から光―スピンへの量子状態転写の実証を目指すとともに、(110)GaAs量子ドット作製のため技術の確立を目指す。

Research Products

• [Int'l Joint Research] ルール大学ボーフム校/ヴュルツブルク大学(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: ルール大学ボーフム校/ヴュルツブルク大学
• [Int'l Joint Research] 国立科学研究所ニール(フランス)
  • Country Name: FRANCE
  • Counterpart Institution: 国立科学研究所ニール
• [Int'l Joint Research] バーゼル大学(スイス)
  • Country Name: SWITZERLAND
  • Counterpart Institution: バーゼル大学
• [Int'l Joint Research] 北京大学(中国)
  • Country Name: CHINA
  • Counterpart Institution: 北京大学
• [Journal Article] High effciency CVD graphene-lead (Pb) Cooper pair splitter (2016)
  • Author(s): I. V. Borzenets, Y. Shimazaki, G.F. Jones, M.F.Craciun, S. Russo, M. Yamamoto, and S. Tarucha
  • Journal Title: Scientific Reports Volume: 6 Pages: 23051 1-8
  • DOI: 10.1038/srep23051
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Quantum dephasing in a gated GaAs triple quantum dot due to non-ergodic noise (2016)
  • Author(s): M.R. Delbecq, T. Nakajima, P. Stano, T. Otsuka, S. Amaha, J. Yoneda, K. Takeda, G. Allison, A. Ludwig, A.D. Wieck, and S. Tarucha
  • Journal Title: Phys. Rev. Lett. Volume: 116 Pages: 046802 1-5
  • DOI: 10.1103/PhysRevLett.116.046802
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] 4pi-periodic Josephson supercurrent in HgTe-based topological Josephson junctions (2016)
  • Author(s): K. Wiedenmann, E. Bocquillon, R.S. Deacon, S. Hartinger, O. Herrmann, T.M. Klapwijk, L. Maier, C. Ames, C. Bru¨ne, C. Gould, A. Oiwa, K. Ishibashi, S. Tarucha, H. Buhmann, and L.W. Molenkamp
  • Journal Title: Nature Communications Volume: 7 Pages: 10303 1-7
  • DOI: 10.1038/ncomms10303
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Spin Qubits with semiconductor quantum dots (2016)
  • Author(s): S. Tarucha, M. Yamamoto, A. Oiwa, and BS. Choi, and Y. Tokura
  • Journal Title: ecture Notes in Physics Volume: 911 Pages: 541-567
  • DOI: 10.1007/978-4-431-55756-2_25
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Valley Hall effect in two-dmensional hexagonal lattices (2015)
  • Author(s): M. Yamamoto, Y. Shimazaki, I.V. Borzenets, and S. Tarucha
  • Journal Title: J. Phys. Soc. Jpn. Volume: 84 Pages: 121006 1-11
  • DOI: 10.7566/JPSJ.84.121006
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electron states of uniaxially strained graphene (2015)
  • Author(s): H. Shioya, R. Saverio, M. Yamamoto, M. Craciun, and S. Tarucha
  • Journal Title: Nano. Lett. Volume: 15 Pages: 7943-7948
  • DOI: 10.1021/acs.nanolett.5b03027
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Superconducting transport in single and parallel double InAs quantum dot Josephson junctions with Nb-based superconducting electrodes (2015)
  • Author(s): S. Baba, J. Sailer, R.S. Deacon, A. Oiwa, K. Shibata, K. Hirakawa and S. Tarucha
  • Journal Title: Appl. Phys. Lett. Volume: 107 Pages: 222602 1-5
  • DOI: 10.1063/1.4936888
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Generation and detection of pure valley current by electrically induced Berry curvature in bilayer graphene (2015)
  • Author(s): Y. Shimazaki, M. Yamamoto, I.V. Borzenets, K. Watanabe, T. Taniguchi, and S. Tarucha,
  • Journal Title: Nature Physics Volume: 11 Pages: 1032-1036
  • DOI: 10.1038/NPHYS3551
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Critical behavior of alternately pumped nuclear spins in quantum dots (2015)
  • Author(s): Y. Kondo, S. Amaha, K. Ono, K. Kono, and S.Tarucha
  • Journal Title: Phys. Rev. Lett. Volume: 115 Pages: 186803 1-5
  • DOI: 10.1103/PhysRevLett.115.186803
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Fast probe of local electronic states in nanostructures utilizing a single-lead quantum dot (2015)
  • Author(s): T. Otsuka, S. Amaha, T. Nakajima, M. Delbecq, J. Yoneda, K. Takeda, R.Sugawara, G. Allison, A. Ludwig, A. Wieck, and S. Tarucha
  • Journal Title: Scientific Reports Volume: 5 Pages: 14616 1-9
  • DOI: 10.1038/srep14616
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Quantum manipulation of two-electron spin states in isolated double quantum dots (2015)
  • Author(s): B. Bertrand, H. Flentje, S. Takada, M. Yamamoto, S. Tarucha, A. Ludwig, A.D. Wieck, C. Bauerle, and T. Meunier
  • Journal Title: Phys. Rev. Lett. Volume: 115 Pages: 096801 1-5
  • DOI: 10.1103/PhysRevLett.115.096801
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Measurement of the transmission phase of an electron in a quantum two-path interferometer (2015)
  • Author(s): S. Takada, M. Yamamoto, C. Bauerle, K. Watanabe, A. Ludwig, A.D. Wieck, and S. Tarucha
  • Journal Title: Appl. Phys. Lett. Volume: 107 Pages: 063101 1-5
  • DOI: 10.1063/1.4928035
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Robust micro-magnet design for fast electrical manipulations of single spins in quantum dots (2015)
  • Author(s): J. Yoneda, T. Otsuka, T. Takakura, M. Pioro-Ladriere, H. Lu, T. Nakajima, T. Obata, A. Noiri, C.J. Palmstrom, A.C. Gossard, and S. Tarucha
  • Journal Title: Applied Physics Express Volume: 8 Pages: 084401 1-4
  • DOI: 10.7567/APEX.8.084401
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Vanishing current hysteresis under competing nuclear spin pumping processes in a quadruplet spin-blockaded double quantum dot (2015)
  • Author(s): S. Amaha, T. Hatano, S. Tarucha, J.A. Gupta, and D.G. Austing
  • Journal Title: Appl. Phys. Lett. Volume: 106 Pages: 172401 1-5
  • DOI: 10.1063/1.4919101
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Cooper pair splitting in parallel quantum dot Josephson junctions (2015)
  • Author(s): R.S. Deacon, A. Oiwa, J. Sailer, S. Baba, Y. Kanai, K. Shibata, K. Hirakawa, and S. Tarucha
  • Journal Title: Nature Communications Volume: 6 Pages: 8446 1-6
  • DOI: 10.1038/ncomms8446
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Spin-dependent current through a quantum dot from spin-polarized non-equilibrium quantum Hall edge channels (2015)
  • Author(s): H. Kiyama, T. Nakajima, S. Teraoka, A. Oiwa, and S. Tarucha
  • Journal Title: Phys. Rev. B Volume: 91 Pages: 155302 1-8
  • DOI: 10.1103/PhysRevB.91.155302
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 表面弾性波に誘導された単一電子の二経路間量子振動 (2016)
  • Author(s): 1.伊藤諒，高田真太郎，山本倫久，C. Bauerle，A. D. Wieck，樽茶清悟
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（泉キャンパス）, 宮城県
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] InAs並列二重ナノワイヤー接合における量子ドットの伝導特性 (2016)
  • Author(s): 馬場翔二，鎌田大，松尾貞茂，R.S.Deacon，大岩顕，K.Li，H.Q.Xu，樽茶清悟
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（泉キャンパス）, 宮城県
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] InAs量子井戸に形成された量子細線を介した超伝導接合の伝導特性 (2016)
  • Author(s): 松尾貞茂，馬場翔二，館野瑞樹，上田健人，鎌田大，Javad Shabani，Christopher Palmstrom，樽茶清悟
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（泉キャンパス）, 宮城県
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] 三重量子ドットにおける準安定電荷状態を利用したスピン・電荷変換 (2016)
  • Author(s): 中島峻，Matthieu R. Delbecq，大塚朋廣，天羽真一，米田淳，野入亮人，武田健太，Giles Allison，Arne Ludwig，Andreas D. Wieck，樽茶清悟
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（泉キャンパス）, 宮城県
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] 三重量子ドット電子スピン共鳴における局所磁場差と交換相互作用の競合 (2016)
  • Author(s): 米田淳，野入亮人，中島峻，大塚朋廣，Matthieu Delbecq，天羽真一，Arne Ludwig，Andreas Wieck，樽茶清悟
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（泉キャンパス）, 宮城県
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] 電極と結合した量子ドットにおけるスピン緩和測定 (2016)
  • Author(s): 大塚朋廣，中島峻，Matthieu Delbecq，天羽真一，米田淳，武田健太，Giles Allison，野入亮人，伊藤匠，Arne Ludwig，Andreas Wieck，樽茶清悟
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（泉キャンパス）, 宮城県
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] Supercurrent in the quantum Hall regime: part I (2016)
  • Author(s): Chung-Ting Ke, Francois Amet, Ivan Borzenets, Jiyingmei Wang, Keji Watanabe, Takashi Taniguchi, Russell Deacon, Michihisa Yamamoto, Yuriy Bomze, Seigo Tarucha, Gleb Finkelstein
  • Organizer: APS March Meeting 2016
  • Place of Presentation: Baltimore, Maryland, USA
  • Year and Date: 2016-03-14 – 2016-03-18
• [Presentation] Supercurrent in the quantum Hall regime, part II (2016)
  • Author(s): Francois Amet, Chung Ting Ke, Ivan Borzenets, Jiyingmei Wang, Kenji Watanabe, Takashi Taniguchi, Russel Deacon, Michihisa Yamamoto, Yuriy Bomze, Seigo Tarucha, Gleb Finkelstein
  • Organizer: APS March Meeting 2016
  • Place of Presentation: Baltimore, Maryland, USA
  • Year and Date: 2016-03-14 – 2016-03-18
• [Presentation] Effects of the environment on the switching current in graphene-based Josephson Junctions (2016)
  • Author(s): Ivan Borzenets, Chung-Ting Ke, Francois Amet, Ming Tso Wei, Michihisa Yamamoto, Yuriy Bomze, Seigo Tarucha, and Gleb Finkelstein
  • Organizer: APS March Meeting 2016
  • Place of Presentation: Baltimore, Maryland, USA
  • Year and Date: 2016-03-14 – 2016-03-18
• [Presentation] Supercurrent in the quantum Hall regime (2016)
  • Author(s): Ming-Tso Wei, Franois Amet, Chung-Ting Ke, Ivan Borzenets, Jiyingmei Wang, Keji Watanabe, Takashi Taniguchi, Russell Deacon, Michihisa Yamamoto, Yuriy Bomze, Seigo Tarucha, Gleb Finkelstein
  • Organizer: APS March Meeting 2016
  • Place of Presentation: Baltimore, Maryland, USA
  • Year and Date: 2016-03-14 – 2016-03-18
• [Presentation] Ballistic and diffusive regimes in current-phase relations of graphene SNS heterojunctions (2016)
  • Author(s): P. Kratz, F. Amet, C. Watson, K. Moler, C. Ke, I. Borzenets, K. Watanabe, T. Taniguchi, R. Deacon, M. Yamamoto, Y. Bomze, S. Tarucha, and G. Finkelstein
  • Organizer: APS March Meeting 2016
  • Place of Presentation: Baltimore, Maryland, USA
  • Year and Date: 2016-03-14 – 2016-03-18
• [Presentation] Multiple quantum dot spin qubits (2016)
  • Author(s): S. Tarucha
  • Organizer: APS March Meeting 2016
  • Place of Presentation: Baltimore, Maryland, USA
  • Year and Date: 2016-03-14 – 2016-03-18
  • Invited
• [Presentation] Hybrid cQED architecture as a model system for non-equilibrium physics in condensed matter (2016)
  • Author(s): G. Allison, M. R. Delbecq, N. Lambert, T. Nakajima, J. Yoneda, K. Takeda, M. Marx, T. Otsuka, S. Amaha, F. Nori, and S. Tarucha
  • Organizer: International Symposium on Dynamics in Artificial Quantum Systems
  • Place of Presentation: University of Tokyo, Tokyo
  • Year and Date: 2016-01-12 – 2016-01-14
• [Presentation] Bayesian estimation of nuclear-spin bath for adaptive feedback with a single-electron spin qubit (2016)
  • Author(s): K. Kawasaki, T. Nakajima, J. Yoneda, M. Delbecq, S. Amaha, T. Otsuka, K. Takeda, and S. Tarucha
  • Organizer: International Symposium on Dynamics in Artificial Quantum Systems
  • Place of Presentation: University of Tokyo, Tokyo
  • Year and Date: 2016-01-12 – 2016-01-14
• [Presentation] 15.T. Nakajima, M. R. Delbecq, T. Otsuka, S. Amaha, J. Yoneda, A. NoiriA, K. Takeda, G. Allison, A. LudwigB, A. D. WieckB, and S. Tarucha (2016)
  • Author(s): T. Nakajima, M. R. Delbecq, T. Otsuka, S. Amaha, J. Yoneda, A. NoiriA, K. Takeda, G. Allison, A. LudwigB, A. D. WieckB, and S. Tarucha
  • Organizer: International Symposium on Dynamics in Artificial Quantum Systems
  • Place of Presentation: University of Tokyo, Tokyo
  • Year and Date: 2016-01-12 – 2016-01-14
• [Presentation] Coherent electron-spin-resonance control of three individual spins in a triple quantum dot (2016)
  • Author(s): A. Noiri, J. Yoneda, T. Nakajima, T. Otsuka, M. R. Delbecq, K. Takeda, S. Amaha, G. Allison, A. Ludwig, A. D. Wieck, and S. Tarucha
  • Organizer: International Symposium on Dynamics in Artificial Quantum Systems
  • Place of Presentation: University of Tokyo, Tokyo
  • Year and Date: 2016-01-12 – 2016-01-14
• [Presentation] Electron spin resonance in a quadruple quantum dot (2016)
  • Author(s): T. Otsuka, T. Nakajima, M. R. Delbecq, S. Amaha, J. Yoneda, K. Takeda, G. Allison, T. Ito, R. Sugawara, A. Noiri, A. Ludwig, A. D. Wieck, and S. Tarucha
  • Organizer: International Symposium on Dynamics in Artificial Quantum Systems
  • Place of Presentation: University of Tokyo, Tokyo
  • Year and Date: 2016-01-12 – 2016-01-14
• [Presentation] A fast addressable spin qubit in a silicon quantum dot (2016)
  • Author(s): K. Takeda, J. Kamioka, T. Otsuka, J. Yoneda, T. Nakajima, M. R. Delbecq, S. Amaha, G. Allison, A. Noiri, R. Sugawara, T. Kodera, S. Oda and S. Tarucha
  • Organizer: International Symposium on Dynamics in Artificial Quantum Systems
  • Place of Presentation: University of Tokyo, Tokyo
  • Year and Date: 2016-01-12 – 2016-01-14
• [Presentation] Manipulation of single flying electrons for quantum electron optics (2016)
  • Author(s): M. Yamamoto and S. Tarucha
  • Organizer: International Symposium on Dynamics in Artificial Quantum Systems
  • Place of Presentation: Komaba Campus, University of Tokyo, Tokyo, Japan
  • Year and Date: 2016-01-12 – 2016-01-14
  • Invited
• [Presentation] Generation and detection of topological valley current in dual-gated bilayer graphene (2015)
  • Author(s): M. Yamamoto
  • Organizer: CEMS Topical Meeting on Emergent 2D Materials
  • Place of Presentation: Okochi Hall, RIKEN, Saitama, Japan
  • Year and Date: 2015-12-11 – 2015-12-11
  • Invited
• [Presentation] Conversion from single photons to single electron spins in quantum dots (2015)
  • Author(s): A. Oiwa
  • Organizer: E-IMR/ICC-IMR/TFC/ERATO SQR International Workshop 2015, Spin Energy Materials
  • Place of Presentation: Katahira Campus, Tohoku University, Sendai, Japan
  • Year and Date: 2015-12-04 – 2015-12-04
  • Invited
• [Presentation] Transport though InAs self-assembled quantum dots controlled by sidegate voltages (2015)
  • Author(s): Akira Oiwa, Ryoki Shikishima, Takashi Hirayama, Haruki Kiyama, Shoji Baba, Naomi Nagai, Kazuhiko Hirakawa, and Seigo Tarucha
  • Organizer: International Symposium on Advanced Nanodevices and Nanotechnologes
  • Place of Presentation: Hawaii USA
  • Year and Date: 2015-11-30 – 2015-12-04
• [Presentation] Generation and detection of topological valley current in bilayer graphene (2015)
  • Author(s): Michihisa Yamamoto and Seigo Tarucha
  • Organizer: Workshop on Physics between Ecole Normale Superieure and University of Tokyo
  • Place of Presentation: University of Tokyo, Tokyo, Japan
  • Year and Date: 2015-11-18 – 2015-11-18
• [Presentation] Photon-electron spin coupling via angular momentum conversion in a gate-defined GaAs double quantum dot (2015)
  • Author(s): A. Oiwa, T. Fujita, and S. Tarucha
  • Organizer: International Symposium on Nanoscale Transport and Technology(ISNTT2015)
  • Place of Presentation: NTT Atsugi R&D Center Atsugi, Kanagawa, Japan
  • Year and Date: 2015-11-17 – 2015-11-20
  • Invited
• [Presentation] Exploiting the slow dynamics of nuclear spins to enhance the coherence time of spin qubits in GaAs (2015)
  • Author(s): M. R. Delbecq, T. Nakajima, P. Stano, T. Otsuka, S. Amaha, J. Yoneda, K. Takeda, G. Allison, A. Ludwig, A. D. Wieck and S. Tarucha
  • Organizer: International Symposium on Nanoscale Transport and Technology(ISNTT2015)
  • Place of Presentation: NTT Atsugi R&D Center Atsugi, Kanagawa, Japan
  • Year and Date: 2015-11-17 – 2015-11-20
• [Presentation] Zero-energy Andreev bound states in a HgTe topological Josephson junction (2015)
  • Author(s): R.S. Deacon, J. Wiedenmann, E. Bocquillon, S. Hartinger, O. Herrmann, T.M. Klapwijk, L. Maier, C. Ames, C. Brune, C. Gould, A. Oiwa, K. Ishibashi, S. Tarucha, H. Buhmann, L.W. Molenkamp
  • Organizer: International Symposium on Nanoscale Transport and Technology(ISNTT2015)
  • Place of Presentation: NTT Atsugi R&D Center Atsugi, Kanagawa, Japan
  • Year and Date: 2015-11-17 – 2015-11-20
• [Presentation] Effect of electrode-geometries on the transport properties of InAs self-assembled quantum dots (2015)
  • Author(s): H. Kiyama, R. Shikishima, S. Baba, T. Hirayama, N. Nagai, K. Hirakawa, S. Tarucha and A. Oiwa
  • Organizer: International Symposium on Nanoscale Transport and Technology(ISNTT2015)
  • Place of Presentation: NTT Atsugi R&D Center Atsugi, Kanagawa, Japan
  • Year and Date: 2015-11-17 – 2015-11-20
• [Presentation] Quantum Entanglement Conservation through Coherent Quantum State Transfer from Single Photon Polarization to Single Electron Spin (2015)
  • Author(s): K. Kuroyama, M.Larsson, T.Fujita, S.Matsuo, S.R.Valentin, A.Ludwig, A.D.Wieck, A.Oiwa and S.Tarucha
  • Organizer: International Symposium on Nanoscale Transport and Technology(ISNTT2015)
  • Place of Presentation: NTT Atsugi R&D Center Atsugi, Kanagawa, Japan
  • Year and Date: 2015-11-17 – 2015-11-20
• [Presentation] Valley current generation in double gated bilayer graphene (2015)
  • Author(s): S. Tarucha
  • Organizer: 1st Japan-EU Workshop on Graphene and Related 2D Materials,
  • Place of Presentation: Sapia Tower, Tokyo, Japan
  • Year and Date: 2015-10-31 – 2015-11-02
• [Presentation] Coherent control of electron spin in a dynamical nuclear spin bath (2015)
  • Author(s): S. Tarucha
  • Organizer: Quantum Nanostructures and Electron-Nuclear Spin Interactions
  • Place of Presentation: Tohoku University, Sendai, Japan
  • Year and Date: 2015-10-19 – 2015-10-21
• [Presentation] Valley current generation in double gated bilayer graphene (2015)
  • Author(s): S. Tarucha
  • Organizer: 12th Sweden - Japan QNANO Workshop
  • Place of Presentation: Hjortviken, Sweden
  • Year and Date: 2015-09-24 – 2015-09-25
• [Presentation] 三層量子井戸におけるν=2のスピン状態遷移と核スピン効果 (2015)
  • Author(s): 天羽真一, 中島峻, 樽茶清悟, 羽田野剛司
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学, 大阪
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] InAs量子井戸から形成した量子細線の伝導特性と電界制御 (2015)
  • Author(s): 松尾貞茂, 鎌田大, 馬場翔二, R. S. Deacon, Javad Shabani, Christopher Palmstrom, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] InAs並列二重ナノワイヤー接合の伝導特性 (2015)
  • Author(s): 馬場翔二, 鎌田大, 松尾貞茂, R.S.Deacon, 大岩顕, K.Li, H.Q.Xu, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 架橋型InAs量子細線における電気伝導特性の評価 (2015)
  • Author(s): 鎌田大, 松尾貞茂, 馬場翔二, R. S. Deacon, K. Li, H. Q. Xu, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 二層グラフェンにおける空間反転対称性の電気的制御によるバレーホール効果 (2015)
  • Author(s): 島崎佑也
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学, 大阪
  • Year and Date: 2015-09-16 – 2015-09-19
  • Invited
• [Presentation] 異なる電極形状によるInAs自己形成量子ドットの電気伝導特性 (2015)
  • Author(s): 敷島稜紀, 大岩顕, 木山治樹, 馬場翔二, 平山孝, 長井奈緒美, 平川一彦, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 二重量子ドットにおけるコヒーレントな光学フォノン支援伝導 (2015)
  • Author(s): 奥山倫, 天羽真一, 羽田野剛司, 泉田渉, 樽茶清悟, 江藤幹雄
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学, 大阪
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 三角形型三重量子ドットの電荷輸送特性 (2015)
  • Author(s): 川崎賢人, 野入亮人, 天羽真一, 大塚朋廣, 中島峻, 米田淳, M. Delbecq, 武田健太, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 四重量子ドットにおける単一電子スピン共鳴 (2015)
  • Author(s): 大塚朋廣, 中島峻, Matthieu Delbecq, 天羽真一, 米田淳, 武田健太, 野入亮人, 菅原烈, Giles Allison, Arne Ludwig, Andreas Wieck, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 高速複数電荷計を用いた多重量子ドット電荷状態の観測 (2015)
  • Author(s): 伊藤匠, 大塚朋廣, 天羽真一, 中島峻, Matthieu Delbecq, 米田淳, 武田健太, Giles Allison, 野入亮人, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 電極閉じ込め型シリコンMOS量子ドットの作製と評価 (2015)
  • Author(s): 米田淳, 本田拓夢, 武田健太, Marian Marx, 大塚朋廣, 中島峻, Matthieu Delbecq, 天羽真一, Giles Allison, 小寺哲夫, 小田俊理, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] Si二重量子ドット中の電子スピンの高速独立操作 (2015)
  • Author(s): 武田健太, 神岡純, 小幡利顕, 大塚朋廣, 中島峻, Matthieu Delbecq, 天羽真一, 米田淳, Giles Alison, 野入亮人, 菅原烈, 小寺哲夫, 小田俊理, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 三重量子ドットにおける非隣接スピンもつれ状態の形成と観測 (2015)
  • Author(s): 中島峻, Matthieu R. Delbecq, 大塚朋廣, 天羽真一, 米田淳, 野入亮人, 武田健太, Arne Ludwig, Andreas D. Wieck, 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 量子ドットにおける近藤位相の検出 (2015)
  • Author(s): 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
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] A tunnel-coupled triangular triple quantum dot (2015)
  • Author(s): A. Noiri, K. Kawasaki, S. Amaha, T. Otsuka, T. Nakajima, J. Yoneda, M.R. Delbecq, K. Takeda, and S. Tarucha
  • Organizer: 第5回 半導体量子効果と量子情報の夏期研修会
  • Place of Presentation: 那須サンバレー、栃木、日本
  • Year and Date: 2015-09-10 – 2015-09-12
• [Presentation] Increasing valley-splitting in Si/SiGe quantum dots (2015)
  • Author(s): M. Marx, K. Takeda, J. Yoneda, G. Allison, T. Honda, M. Delbecq, T. Otsuka, T. Nakajima, S. Amaha, T. Kodera, S. Oda, and Seigo Tarucha
  • Organizer: 第5回 半導体量子効果と量子情報の夏期研修会
  • Place of Presentation: 那須サンバレー、栃木、日本
  • Year and Date: 2015-09-10 – 2015-09-12
• [Presentation] Magnetic field dependence of quantized conductance plateau in InAs quantum wire (2015)
  • Author(s): S. Matsuo, Hiroshi Kamata, Shoji Baba, Russell Deacon, Javad Shabani, Christopher Palmstrom, and Seigo Tarucha
  • Organizer: 第5回 半導体量子効果と量子情報の夏期研修会
  • Place of Presentation: 那須サンバレー、栃木、日本
  • Year and Date: 2015-09-10 – 2015-09-12
• [Presentation] Transport property of double InAs nanowire junctions (2015)
  • Author(s): Shoji Baba, Russell Deacon, Akira Oiwa, Kenji Shibata, Kazuhiko Hirakawa, and Seigo Tarucha
  • Organizer: 第5回 半導体量子効果と量子情報の夏期研修会
  • Place of Presentation: 那須サンバレー、栃木、日本
  • Year and Date: 2015-09-10 – 2015-09-12
• [Presentation] Valley Hall effect in electrically spatial inversion symmetry broken bilayer graphene (2015)
  • Author(s): Y. Shimazaki, Michihisa Yamamoto, Ivan V. Borzenets, Kenji Watanabe, Takashi Taniguchi, and Seigo Tarucha
  • Organizer: 第5回 半導体量子効果と量子情報の夏期研修会
  • Place of Presentation: 那須サンバレー、栃木、日本
  • Year and Date: 2015-09-10 – 2015-09-12
• [Presentation] Coincidence measurement of a photon and an electron towards quantum entanglement generation between a photon polarization and an electron spin (2015)
  • Author(s): K. Kuroyama, M.Larsson, T.Fujita, S.Matsuo, S.R.Valentin, A.Ludwig, A.D.Wieck, and S.Tarucha
  • Organizer: 第5回 半導体量子効果と量子情報の夏期研修会
  • Place of Presentation: 那須サンバレー、栃木、日本
  • Year and Date: 2015-09-10 – 2015-09-12
• [Presentation] High Efficiency CVD Graphene-lead (Pb) Cooper Pair Splitter (2015)
  • Author(s): I. Borzenets, Y. Shimazaki, G. Jones, M. Craciun, S. Russo, M. Yamamoto, and S.Tarucha
  • Organizer: 第5回 半導体量子効果と量子情報の夏期研修会
  • Place of Presentation: 那須サンバレー、栃木、日本
  • Year and Date: 2015-09-10 – 2015-09-12
• [Presentation] Splitting electron pairs into separate depleted channels using a surface acoustic waves (2015)
  • Author(s): R. Ito, S. Takada, M. Yamamoto, C. Bauerle，A. D. Wieck，and S. Tarucha
  • Organizer: 第5回 半導体量子効果と量子情報の夏期研修会
  • Place of Presentation: 那須サンバレー、栃木、日本
  • Year and Date: 2015-09-10 – 2015-09-12
• [Presentation] Implementation of three spin qubits in a lateral triple quantum dot (2015)
  • Author(s): A. Noiri, T. Nakajima, J. Yoneda, M. Delbecq, T. Otsuka, S. Amaha, K. Takeda, A. Ludwig, A.D. Wieck and S. Tarucha
  • Organizer: SpinTech VIII International School & Conference
  • Place of Presentation: Congress Center Basel, Basel, Switzerland
  • Year and Date: 2015-08-10 – 2015-08-13
• [Presentation] A strongly driven single-spin qubit in a Si/SiGe double quantum dot with a micro-magnet (2015)
  • Author(s): K. Takeda, J. Kamioka, T. Obata, T. Otsuka, T. Nakajima, M. R. Delbecq, S. Amaha, J. Yoneda, G. Allison, A. Noiri, R. Sugawara, T. Kodera, S. Oda, and S. Tarucha
  • Organizer: SpinTech VIII International School & Conference
  • Place of Presentation: Congress Center Basel, Basel, Switzerland
  • Year and Date: 2015-08-10 – 2015-08-13
• [Presentation] Single-shot readout of electron spin states in a quantum dot using spin filtering by quantum Hall edge states (2015)
  • Author(s): Haruki Kiyama, Akira Oiwa, and Seigo Tarucha
  • Organizer: SpinTech VIII International School & Conference
  • Place of Presentation: Congress Center Basel, Basel, Switzerland
  • Year and Date: 2015-08-10 – 2015-08-13
• [Presentation] Photon-electron spin coupling using gate-defined GaAs double quantum dots (2015)
  • Author(s): Akira Oiwa, Takafumi Fujita, and Seigo Tarucha
  • Organizer: SpinTech VIII International School & Conference
  • Place of Presentation: Congress Center Basel, Basel, Switzerland
  • Year and Date: 2015-08-10 – 2015-08-13
• [Presentation] Multiple spin qubits with improved gate fidelity (2015)
  • Author(s): S. Tarucha
  • Organizer: SpinTech VIII International School & Conference
  • Place of Presentation: Congress Center Basel, Basel, Switzerland
  • Year and Date: 2015-08-10 – 2015-08-13
  • Invited
• [Presentation] abrication and characterization of gate-defined small Si-MOS quantum dot device (2015)
  • Author(s): J. Yoneda, T. Honda, K. Takeda, M. Marx, T. Otsuka, T. Nakajima, M. R. Delbecq, S. Amaha, G. Allison, T. Kodera, S. Oda, and S. Tarucha
  • Organizer: Silicon Quantum Electronics Workshop2015
  • Place of Presentation: かがわ国際会議場・展示場, 香川
  • Year and Date: 2015-08-03 – 2015-08-04
• [Presentation] Improved design and fabrication for Si/SiGe quantum dots with increased valley-splitting (2015)
  • Author(s): M. Marx, K. Takeda, J. Yoneda, G. Allison, T. Honda, M. Delbecq, T. Otsuka, T. Nakajima, S. Amaha, T. Kodera, and S. Oda
  • Organizer: Silicon Quantum Electronics Workshop2015
  • Place of Presentation: かがわ国際会議場・展示場, 香川
  • Year and Date: 2015-08-03 – 2015-08-03
• [Presentation] 固体中の電子の量子操作と計測 (2015)
  • Author(s): 樽茶清悟
  • Organizer: 第60回物性若手夏の学校
  • Place of Presentation: ぎふ長良川温泉ホテルパーク, 岐阜
  • Year and Date: 2015-07-27 – 2015-07-31
  • Invited
• [Presentation] Valley Hall effect in electrically spatial inversion symmetry broken bilayer graphene (2015)
  • Author(s): Yuya Shimazaki, Michihisa Yamamoto, Ivan V. Borzenets, Kenji Watanabe, Takashi Taniguchi, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Zero-energy Andreev bound states in a HgTe topological Josephson junction (2015)
  • Author(s): Erwann Bocquillon, Jonas Wiedenmann, Russell S. Deacon, Simon Hartinger, Teunis M. Klapwijk, Luis Maier, Christopher Ames, Christoph Brune, Koji Ishibashi, Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Spin state transitions and interlayer charge transfer in a triple-layered quantum Hall system (2015)
  • Author(s): Shinichi Amaha, Takashi Nakajima, Seigo Tarucha, and Tsuyoshi Hatano
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Manipulation and detection of local and non-local spin entanglement (2015)
  • Author(s): S. Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
  • Invited
• [Presentation] CVD Graphene/Lead (Pb)-based Cooper-pair splitter (2015)
  • Author(s): Ivan V. Borzenets, Yuya Shimazaki, Gareth Jones, Monica Craciun, Saverio Russo, Michihasa Yamamoto, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Control of transport property of InAs quantum wire with side and top gate structure (2015)
  • Author(s): Sadashige Matsuo, Hiroshi Kamata, Shoji Baba, Russell Deacon, Javad Shabani, Christopher Palmstrom, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Long-range spin transfer using individual electrons (2015)
  • Author(s): Benoit Bertrand, Sylvain Hermelin, Shintaro Takada, Michihisa Yamamoto, Seigo Tarucha, Arne Ludwig, Andreas D. Wieck, Christopher Bauerle, and Tristan Meunier
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Transport properties of surface passivated InAs nanowires (2015)
  • Author(s): Hiroshi Kamata, Sadashige Matsuo, Shoji Baba, Russell S. Deacon, K Li, H Q. Xu, Akira Oiwa, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Transport property of single and double InAs quantum dot Josephson junctions with Nb-based superconductors (2015)
  • Author(s): Shoji Baba, Russell Deacon, Akira Oiwa, Kenji Shibata, Kazuhiko Hirakawa, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Selective injection of single electron spins into a quantum dot using spin-polarized non-equilibrium quantum Hall edge channels (2015)
  • Author(s): Haruki Kiyama, Takashi Nakajima, Souichiro Teraoka, Akira Oiwa, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Realization and evaluation of a fast single-lead quantum dot probe (2015)
  • Author(s): Tomohiro Otsuka, Shinichi Amaha, Takashi Nakajima, Matthieu R. Delbecq, Jun Yoneda, Kenta Takeda, Retsu Sugawara, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Electrically pulsed fourier transform spectroscopy of coupled electron spins in triple quantum dot (2015)
  • Author(s): Takashi Nakajima, Matthieu R. Delbecq, Tomohiro Otsuka, Shinichi Amaha, Jun Yoneda, Akito Noiri, Kenta Takeda, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] A tunnel-coupled triangular triple quantum dot (2015)
  • Author(s): Akito Noiri, Kento Kawasaki, Shinichi Amaha, Tomohiro Otsuka, Takashi Nakajima, Jun Yoneda, Matthieu R. Delbecq, Kenta Takeda, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Coherent tunneling in double quantum qot with LO-phonon emission (2015)
  • Author(s): Rin Okuyama, Shinichi Amaha, Tsuyoshi Hatano, Wataru Izumida, Seigo Tarucha, and Mikio Eto
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Electron pair splitting into separate depleted channels using a surface acoustic wave (2015)
  • Author(s): Ryo Ito, Shintaro Takada, Michihisa Yamamoto, Christopher Bauerie, Andreas D. Wieck, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] Single-electron spin resonance in a quadruple quantum dot (2015)
  • Author(s): Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq, Shinichi Amaha, Jun Yoneda, Kenta Takeda, Akito Noiri, Retsu Sugawara, Giles Allison, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
  • Organizer: EP2DS-21
  • Place of Presentation: 仙台国際センター, Sendai, Japan
  • Year and Date: 2015-07-26 – 2015-07-31
• [Presentation] CVD Graphene/Lead (Pb)-based Cooper-pair splitter (2015)
  • Author(s): I. Borzenets, Yuya Shimazaki, Gareth Jones, Monica Craciun, Saverio Russo, Michihasa Yamamoto, and Seigo Tarucha
  • Organizer: The Sixteenth International Conference on the Science and Application of Nanotubes(NT15)
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-29 – 2015-07-03
• [Presentation] Valley Hall effect in electrically spatial inversion symmetry broken bilayer graphene (2015)
  • Author(s): Y. Shimazaki, Michihisa Yamamoto, Ivan V. Borzenets, Kenji Watanabe, Takashi Taniguchi, and Seigo Tarucha
  • Organizer: The Sixteenth International Conference on the Science and Application of Nanotubes(NT15)
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-29 – 2015-07-03
• [Presentation] Valley Hall effect in bilayer graphene (2015)
  • Author(s): Y. Shimazaki, M. Yamamoto, I. V. Borzenets, K. Watanabe, T. Taniguchi, S. Tarucha
  • Organizer: Superstripes2015 International Conference
  • Place of Presentation: Hotel Continental Ischia, Ischia, Italy
  • Year and Date: 2015-06-13 – 2015-06-18
  • Invited
• [Presentation] Valley Hall effect in electrically spatial inversion symmetry broken bilayer graphene (2015)
  • Author(s): Yuya Shimazaki, Michihisa Yamamoto, Ivan V. Borzenets, Kenji Watanabe, Takashi Taniguchi, and Seigo Tarucha
  • Organizer: New Perspectives in Spintronic and Mesoscopic Physics（NPSMP 2015)
  • Place of Presentation: 東京大学物性研究所, 千葉
  • Year and Date: 2015-06-01 – 2015-06-19
  • Invited
• [Presentation] Conversion from single photons to single electron spin using GaAs-based double quantum dots (2015)
  • Author(s): Akira Oiwa, Takafumi Fujita, and Seigo Tarucha
  • Organizer: New Perspectives in Spintronic and Mesoscopic Physics（NPSMP 2015)
  • Place of Presentation: 東京大学物性研究所, 千葉
  • Year and Date: 2015-06-01 – 2015-06-19
  • Invited
• [Presentation] Generation and detection of pure valley current in bilayer graphene (2015)
  • Author(s): New Perspectives in Spintronic and Mesoscopic Physics（NPSMP 2015)
  • Organizer: CMOSETR2015
  • Place of Presentation: Hyatt Regency Vancouver, Vancouver, Canada
  • Year and Date: 2015-05-20 – 2015-05-20
  • Invited
• [Remarks] 研究室ホームページ
  • URL: http://www.meso.t.u-tokyo.ac.jp/