2005 Fiscal Year Final Research Report Summary
Sub-10 attoseconds manipulation of quantum phases and single-molecule quantum computing
| Project/Area Number |
15204034
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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 |
原子・分子・量子エレクトロニクス・プラズマ
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| Research Institution | Institute for Molecular Science (2004-2005)
Okazaki National Research Institutes (2003) |
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Principal Investigator |
OHMORI Kenji Institute for Molecular Science, Department of Electronic Structure, Professor, 電子構造研究系, 教授 (10241580)
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| Co-Investigator(Kenkyū-buntansha) |
KATSUKI Hiroyuki Institute for Molecular Science, Department of Electronic Structure, Research Associate, 電子構造研究系, 助手 (10390642)
HOSAKA Kouichi Institute for Molecular Science, Department of Electronic Structure, Guest Researcher, 電子構造研究系, 特別協力研究員 (00419855)
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| Project Period (FY) |
2003 – 2005
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| Keywords | wave packet / attosecond / quantum interference / coherent control / quantum information / quantum phase / molecule / quantum computer |
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| Research Abstract |
We have succeeded in controlling quantum interference of two vibrational wave-packets in a molecule almost completely, and in observing its temporal evolution in real time. In this real-time observation, we have demonstrated that the temporal evolution of a wave packet is sensitive to the relative phases among the vibrational eigenstates within the wave packet. By using our high-precision interferometric technique, it is possible to read and write a "population code" which is a population ratio among the vibrational eigenstates of a molecule. In the present study, we have demonstrated that the combination of the real-time observation and the population code can provide full quantum information of a wave packet. Moreover we have developed a novel technique to visualize quantum standing-waves (quantum ripples) generated transiently by the wave-packet interference with picometer and femtosecond spatiotemporal resolution. Very recently we have succeeded in tailoring such a visualized spatiotemporal Image (quantum fabric).
We have also succeeded in developing a molecular memory based on our advanced interferometric techniques. This molecular memory is a quantum memory where each vibrational eigenstate serves as a bit, and both amplitude and phase information can be read and written. The superposition of those vibrational eigenstates can be used as a qubit. Moreover we have developed quantum gate and algorithm to apply this molecular memory to quantum information processing. A series of these achievements indicates a possibility of molecule-based optical-phase memory and quantum computer.
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Research Products
(6 results)
