2001 Fiscal Year Final Research Report Summary
Implementation of Highfield W-Band Quantum-Phase Controlled FT Pulsed Electron Magnetic Resonance for Molecular Spinics
| Project/Area Number |
10304049
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Osaka City University |
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Principal Investigator |
TAKUII Takeji Osaka City University, Departments of Chemistry, & Materials Science, Graduate School of Science, Professor (10117955)
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| Co-Investigator(Kenkyū-buntansha) |
DAISUKE Shiomi Osaka City University, Departments of Chemistry & Materials Science, Graduate School of Science, Associate Professor (40260799)
SATO Kazunobu Osaka City University, Departments of Chemistry & Materials Science, Graduate School of Science, Lecturer (90264796)
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| Project Period (FY) |
1998 – 2001
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| Keywords | Pulse-based electron magnetic resonaznce / Magnetic dipolar spinwave / Quantum phase control / Molecular spinics / Molecular magnetism / Organic magnetism / Quantum information processing / Quantum computer |
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| Research Abstract |
During the research period, the implementation of highfield W-band quantum-phase controlled FT pulsed electron magnetic resonance for molecular spinics was carried out from both theoretical and experimental sides. The main purpose of the research project was to establish the methodology in terms of electron magnetic resonance for controlling quantum phases of both electron spins and nuclear spins in molecular frames such as organic open-shell systems. The quantum phase control is essential to build up any quantum computers or quantum information processing systems based on spin qubits. Particularly, the manipulation of electron phases has been intractable in terms of magnetic resonance spectroscopy. In this project, the phases between two addressable electron spins in organic high spins have been controlled for the first time. The corresponding experimental setup has been based on pulsed electron-electron double resonance technology operating at Q-band, attempting to up-convert the microwave frequency to W-band. Several important experiments for quantum computing and quantum information processing such as super-dense coding or inter-conversion between Bell states composed of electron/nuclear qubits as synthetic qubits in molecular frames have been for the first time achieved at low temperature. The approach established in the project is applicable to the extension to multiple-frequency versions, but it costs enormously. The technical innovation was attempted by using arbitrary wave generation based on high-frequency digital technology operating at low microwave frequency regions. In the alternative approach, the number of microwave frequencies, their relative phase and amplitudes are able to controlled. Also, during the research project, molecular design for scalable electron/nuclear spin qubits and their synthetic attempt have been carried out, aiming at building up "practical" quantum computers and quantum information processing systems.
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Research Products
(129 results)
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[Journal Article] A new trend in phenalenyl chemistry : A persistent neutral radical, 2,5,8-tri-tert-butyl-1,3-diazaphenalenyl, and the excited triplet state of the gable syn-dimer in the crystal of column motif2002
Author(s)
Y.Morita, T.Aoki, K.Fukui, K.Naksuji, T.Takui, et al.
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Journal Title
Angew.Chem.Int.Ed. 41
Pages: 1793-1798
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Redox-based spin diversity in a 6-oxophenalenoxyl system : Generation, ESR/ENDOR/TRIPLE, and theoretical studies of 2,5,8-tri-tert-butylohenalenyl-1,6-bis(olate)salts2002
Author(s)
Y.Morita, S.Nishida, J.Kawai, K.Nakasuji, T.Takui, et al.
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Journal Title
Organic Letters 4
Pages: 1985-1988
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Redox-based spin diversity in a 6-oxophenalenoxyl system : Generation, ESR/ENDOR/TRIPLE, and theoretical studies of 2,5,8-tri-tert-butylphenalenyl-1,6-bis(olate)salts2002
Author(s)
Y.Morita, S.Nishida, J.Kawai, K.Nakasuji, T.Takui, et al.
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Journal Title
Organic Letters 4
Pages: 1985-1988
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] The first non-Kekule polynuclear aromatic high-spin hydrocarbon : Generation of a triangulene derivative and band structure calculation of triangulene-based high-spin hydrocarbons2001
Author(s)
K.Fukui, J.Inoue, T.Kubo, S.Nakazawa, T.Aoki, Y.Morita, K.Yamamoto, K.Sato, D.Shiomi, K.Nakasuji, T.Takui
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Journal Title
Synthetic Metals 121
Pages: 1824-1825
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Electronic spin structure of novel persistent neutral radical with 1,3-diazaphenalene skeleton as studied by electron-nuclear magnetic resonance spectroscopies2001
Author(s)
K.Fukui, T.Aoki, Y.Morita, S.Nakazawa, K.Tamaki, K.Yamamoto, K.Sato, D.Shiomi, A.Naito, T.Takui, K.Nkasuji
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Journal Title
Synthetic Metals 121
Pages: 1770-1771
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Preparations and characterizations of novel N,N'-ethylene-bridged-(S)-histidyl-(S)-tyrosine derivatives and their copper(II)complexes as models of galactose oxidase2000
Author(s)
K.Yamato, T.Inada, M.Doe, A.Ichimura, T.Takui, Y.Kojima, T.Kikunaga, S.Nakamura, N.Yanagihara, T.Onaka, S.Yano
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Journal Title
Bull.Chem.Soc.Japan 73
Pages: 903-912
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] New persistent radicals : Synthesis and electronic spin structure of 2,5-di-tert-butyl-6-oxophenalenoxyl derivatives2000
Author(s)
Y.Morita, T.Ohba, N.Haneda, S.Maki, J.Kawai, K.Hatanaka, K.Sato, D.Shiomi, T.Takui, K.Naksuji
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Journal Title
J.Am.Chem.Soc. 122
Pages: 4825-4826
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Preparations and characterizations of novel N, N'-ethylene-bridged-(S)-histidyl-(S)-tyrosine derivatives and their copper(II)complexes as models of galactose oxidase2000
Author(s)
K.Yamato, T.Inada, M.Doe, A.Ichimura, T.Takui, Y.Kojima, T.Kikunaga, S.Nakamura, N.Yanagihara, T.Onaka, S.Yano
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Journal Title
Bull.Chem.Soc.Japan 73
Pages: 903-912
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] A stable neutral hydrocarbon radical : Synthesis, crystal structure, and physical properties of 2,5,8-tri-tert-butyl-phenalenyl1999
Author(s)
K.Goto, T.Kubo, K.Yamamoto, K.Nakasuji, K.Sato, D.Shiomi, T.Takui, M.Kubota, T.Kobayashi, K.Yakusi, J.Y.Ouyang
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Journal Title
J.Am.Chem.Soc. 121
Pages: 1619-1620
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Structure and photolysis of the dimer of 2,2'-(m-phenylene)bis(4,5-diphenylimidazole-2-yl)diradical1999
Author(s)
K.Okada, K.Imamura, M.Oda, A.Kajiwara, M.Kamachi, K.Ishino, K.Tashiro, M.Kozaki, K.Sato, T.Takui
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Journal Title
Synthetic Metals 103
Pages: 2308-2309
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Electronic structure of a stable phenalenyl radical as studied by ESR/ENDOR, paramagnetic NMR spectroscopy and SQUID measurements1999
Author(s)
K.Fukui, K.Sato, D.Shiomi, T.Takui, K.Itoh, T.Kubo, K.Gotoh, K.Yamamoto, K.Nakasuji, A.Naito
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Journal Title
Mol.Cryst.Lig.Cryst.Sci. & Technology 334
Pages: 49-58
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Electronic structure of a stable phenalenyl radical as studied by ESR/ENDOR, paramagnetic NMR spectroscopy and SQUID measurements1999
Author(s)
K.Fukui, K.Sato, D.Shiomi, T.Takui, K.Itoh, T.Kubo, K.Gotoh, K.Yamamoto, K.Nakasuji, A.Naito
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Journal Title
Mol.Cryst.Lig.Cryst.Sci.& Technology 334
Pages: 49-58
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] 4,8,12,16-Tetra-tert-butyl-s-indaceno[1,2,3-cd : 5,6,7-c'd']diphenalene : A four-stage amphoteric redox system1998
Author(s)
K.Ohashi, T.Kubo, T.Masui, K.Yamamoto, K.Nakasuji, T.Takui, Y.Kai, I.Murata
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Journal Title
J.Am.Chem.Soc. 120
Pages: 2018-2027
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Tribenzo-1,4,5,8,9,12-hexathiatriphenylene dication and dibenzo-1,4,5,8-tetrathiaphenanthrene dication1998
Author(s)
T.Nakai, M.Kozaki, K.Sato, D.Shiomi, T.Takui, K.Okada
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Journal Title
Chemistry Letters
Pages: 933-934
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Electronic structure of a stable phenalenyl radical in crystalline state as studied by SQUID measurements, cw-ESR, and C-13 CP MAS NMR spectroscopy1998
Author(s)
K.Fukui, K.Sato, D.Shiomi, T.Takui, K.Gotoh, T.Kubo, K.Yamamoto, K.Naksuji, A.Naito
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Journal Title
Synthetic Metals 103
Pages: 2257-2258
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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