Molecular spin quantum control

2013 Fiscal Year Final Research Report

• Project Area: Quantum cybernetics - interdisciplinary studies of quantum controls and developments toward quantum computing
• Project/Area Number: 21102004
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Osaka University
• Principal Investigator: KITAGAWA Masahiro 大阪大学, 基礎工学研究科, 教授 (20252629)
• Co-Investigator(Kenkyū-buntansha): TAKUI Takeji 大阪市立大学, 理学研究科, 特任教授 (10117955)
• Co-Investigator(Renkei-kenkyūsha): SATO Kazunobu 大阪市立大学, 理学研究科, 教授 (90264796) ; MORITA Yasushi 大阪大学, 理学研究科, 准教授 (70230133) ; KAGAWA Akinori 大阪大学, 基礎工学研究科, 助教 (70533701)
• Project Period (FY): 2009-07-23 – 2014-03-31
• Keywords: 量子情報 / パルス磁気共鳴 / 分子スピン / スピン増幅 / パルス補償 / 動的核偏極 / ESR / 三重項状態

Research Abstract

We have demonstrated precise spin controls for quantum information processing by numerical optimization of pulse waveform and pulse compensation for transient phenomenon in a resonator. Using regioselectively isotope labeled molecules, we have realized nuclear polarization of 34 % at room temperature and spin amplification. We have developed Ku-band pulse ESR spectrometer with an arbitrary wave form generator and stripline resonator and succeeded in pulse ESR experiments at 150 mK.
We have designed molecules with electron spins and nuclear spins (molecular spins) which have desirable electromagnetic property for quantum control by means of magnetic resonance and characterized them.

Research Products

• [Journal Article] Room-temperature hyperpolarization of nuclear spins in bulk (2014)
  • Author(s): K. Tateishi, M. Negoro, S. Nishida, A. Kagawa, Y. Morita, M. Kitagawa
  • Journal Title: Proc. Natl. Acad. Sci Volume: 111 Pages: 7527-7530
  • DOI: 10.1073/pnas.1315778111.
  • Peer Reviewed
• [Journal Article] An ab initio MO study of heavy atom effects on the zero-field splitting tensors of high-spin nitrenes: How the spin-orbit contributions affected (2014)
  • Author(s): Kenji Sugisaki, Kazuo Toyota, Kazunobu Sato, Daisuke Shiomi, Masahiro Kitagawa, Takeji Takui
  • Journal Title: Phys. Chem. Chem. Phys Volume: 16 Pages: 9171-9181
  • DOI: 10.1039/c4cp00822g.
  • Peer Reviewed
• [Journal Article] Dynamic Nuclear Polarization with Photoexcited Triplet Electrons in a Glass Matrix (2013)
  • Author(s): K. Tateishi, M. Negoro, A. Kagawa, M. Kitagawa
  • Journal Title: Angewandte Chemie Int. Ed Volume: 52 Pages: 13307-13310
  • DOI: 10.1002/ange.201305674.
  • Peer Reviewed
• [Journal Article] Hyperpolarization of Thin Films with Dynamic Nuclear Polarization Using Photoexcited Triplet Electrons (2013)
  • Author(s): K. Tateishi, M. Negoro, A. Kagawa, T. Uesaka, M. Kitagawa
  • Journal Title: J. Phys. Soc. Jpn Volume: 82 Pages: 084005-1-5
  • DOI: 10.7566/JPSJ.82.084005.
  • Peer Reviewed
• [Journal Article] Strongly driven electron spins using a Ku band stripline electron paramagnetic resonance resonator (2013)
  • Author(s): Y. S. Yap, H. Yamamoto, Y. Tabuchi, M. Negoro, A. Kagawa, M. Kitagawa
  • Journal Title: J. Magn. Reson Volume: 232 Pages: 62-27
  • DOI: 10.1016/j.jmr.2013.04.015.
  • Peer Reviewed
• [Journal Article] Pulsed electron spin nutation spectroscopy for weakly exchange-coupled multi-spin molecular systems with nuclear hyperfine couplings: a general approach to bi- and triradicals and determination of their spin dipolar and exchange interactions (2013)
  • Author(s): K. Ayabe, K. Sato, S. Nakazawa, S. Nishida, K. Sugisaki, T. Ise, Y. Morita, K. Toyota, D. Shiomi, M. Kitagawa, S. Suzuki, K. Okada, T. Takui
  • Journal Title: Mol. Phys Volume: 111 Pages: 2767-2787
  • DOI: 10.1080/00268976.2013.811304.
  • Peer Reviewed
• [Journal Article] Hexamethoxyphenalenyl as a Possible Quantum Spin Simulator: An Electronically Stabilized Neutral pi Radical with Novel Quantum Coherence Owing to Extremely High Nuclear Spin Degeneracy (2013)
  • Author(s): A. Ueda, S. Suzuki, K. Yoshida, K. Fukui, K. Sato, T. Takui, K. Nakasuji, Y. Morita
  • Journal Title: Angew. Chem. Int. Ed Volume: 52 Pages: 4795-4799
  • DOI: 10.1002/anie.201301435.
  • Peer Reviewed
• [Journal Article] Ligand-induced electron spin-assembly on a DNA tile (2013)
  • Author(s): H. Atsumi, S. Nakazawa, C. Dohno, K. Sato, T. Takui, K. Nakatani
  • Journal Title: Chemical Communications Volume: 49 Pages: 6370-6372
  • DOI: 10.1039/c3cc41801d.
  • Peer Reviewed
• [Journal Article] Scalable Spin Amplification with a Gain over a Hundred (2011)
  • Author(s): M. Negoro, K. Tateishi, A. Kagawa, M. Kitagawa
  • Journal Title: Phys. Rev. Lett Volume: 107 Pages: 050503-1-5
  • DOI: 10.1103/PhysRevLett.107.050503.
  • Peer Reviewed
• [Journal Article] Total compensation of pulse transients inside a resonator (2010)
  • Author(s): Y. Tabuchi, M. Negoro, K. Takeda, M. Kitagawa
  • Journal Title: J. Magn. Reson Volume: 204 Pages: 327-332
  • DOI: 10.1016/j.jmr.2010.03.014.
  • Peer Reviewed
• [Presentation] 任意波形マイクロ波を用いたESR 分光技術 (2014)
  • Author(s): 佐藤和信
  • Organizer: 日本化学会第93春季年会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2014-03-27
• [Presentation] Arbitrary Waveform Pulsed ESR at Very Low Temperature (2014)
  • Author(s): M. Kitagawa
  • Organizer: The 5th International Workshop on Far-Infrared Technologies 2014
  • Place of Presentation: Fukui university, Japan
  • Year and Date: 2014-03-06
  • Invited
• [Presentation] Topological Protection of Quantum Information without Measurement (2014)
  • Author(s): M. Kitagawa, K. Fujii, M. Negoro, N. Imoto, and Y. Morita
  • Organizer: FIRST International Symposium on Topological Quantum Technology
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2014-01-29
  • Invited
• [Presentation] Modified QRO 法による零磁場分裂テンソルのスピン軌道項のDFT 計算 (2013)
  • Author(s): 杉崎研司
  • Organizer: 第52回電子スピンサイエンス学会年会
  • Place of Presentation: 大宮ソニックシティー
  • Year and Date: 2013-10-24
• [Presentation] Room-temperature hyperpolarization using photo-excited triplet electrons (2013)
  • Author(s): M. Negoro
  • Organizer: 4th international DNP Symposium
  • Place of Presentation: Copenhagen, Denmark
  • Year and Date: 2013-08-29
• [Presentation] Can open-shell chemistry contribute to electron spin science/spin technology of quantum computing and quantum information processing? (2013)
  • Author(s): T. Takui
  • Organizer: The 13^<th> International Symposium on Spin and Magnetic Field Effects in Chemistry and Related Phenomena
  • Place of Presentation: Bad Hofgastein, Australia
  • Year and Date: 2013-04-25
• [Presentation] Spin amplification with hyperpolarized nuclei (2013)
  • Author(s): M. Negoro
  • Organizer: The 11th US-Japan Joint Seminar on Quantum Electronics and Laser Spectroscopy
  • Place of Presentation: Nara, Japan
  • Year and Date: 2013-04-11
  • Invited
• [Presentation] Recent trends in organic high-spin/open-shell chemistry: Electron spin technology (2013)
  • Author(s): T. Takui
  • Organizer: The 46^<th> Annual International Meeting of ESR Spectroscopy Group of Royal Society of Chemistry
  • Place of Presentation: Univ. of Warwick, UK
  • Year and Date: 2013-04-09
• [Presentation] スピン増幅の概念とスケーラブルな実現 (2011)
  • Author(s): 根来誠
  • Organizer: 日本物理学会
  • Place of Presentation: 富山大学
  • Year and Date: 2011-09-22
  • Invited
• [Book] CSJ カレントレビュー12 未来材料を創出するπ電子系の科学 (2013)
  • Author(s): 森田靖
  • Total Pages: 120-126
  • Publisher: 公益財団法人日本科学会化学同人
• [Book] 第二次先端ウオッチング調査:融合領域の創成 分子エレクトロニクスから分子スピンエレクトロニクスへの展望 (2013)
  • Author(s): 森田靖
  • Total Pages: 21-24
  • Publisher: 公益財団法人日本化学会学術研究活性化委員会
• [Book] 有機分子スピンバッテリーの開発-縮重フロンティア分子軌道を利用した二次電池, 化学 vol.67 No.9 (2013)
  • Author(s): 西田辰介
  • Total Pages: 37-43
  • Publisher: 化学同人
• [Book] EPR of free radicals in solids II (2013)
  • Author(s): K. Sato, S. Nakazawa, S. Nishida, R. D. Rahimi, T. Yoshino, Y. Morita, K. Toyota, D. Shiomi, M. Kitagawa, T. Takui
  • Total Pages: 163-204
  • Publisher: Springer-Verlag
• [Book] Molecular Realizations of Quantum Computing 2007 (2009)
  • Author(s): K. Sato, S. Nakazawa, R. D. Rahimi, S. Nishida, T. Ise, D. Shiomi, K. Toyota, Y. Morita, M. Kitagawa, P. Carl, P. Hoefer, T. Takui
  • Total Pages: 58-162
  • Publisher: World Scientific
• [Remarks] 北川グループ
  • URL: http://www.qc.ee.es.osaka-u.ac.jp/~qc/
• [Remarks] 工位グループ
  • URL: http://www.qcqis.sci.osaka-cu.ac.jp/ms/jp/
• [Patent(Industrial Property Rights)] 量子誤り訂正方法、量子誤り訂正装置、および、量子情報格納装置 (2013)
  • Inventor(s): 根来誠、北川勝浩、森田靖、西田辰介、藤井啓裕
  • Industrial Property Rights Holder: 国立大学法人大阪大学
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 5376482
  • Filing Date: 2013-10-04