2007 Fiscal Year Final Research Report Summary
Theoretical study on the mechanism and dynamics of nanostructure fabrication using localized photons
| Project/Area Number |
17510084
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nanostructural science
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
KOBAYSHI Kiyoshi Tokyo Institute of Technology, Dept. Physics, Professor (30397038)
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| Project Period (FY) |
2005 – 2007
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| Keywords | Localized photon / Nanostructure / Near-field optical interaction / Coherent phonon / Molecular vibrational excitation / Dot size control |
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| Research Abstract |
The purpose of the study was (1) to quantum-theoretically formulate an interacting system constituting of photons, electronic polarizations, and phonons in pseudo-one dimensional materials with a finite size, and to build a theoretical model providing experimentalists with guiding information, (2) to predict collective phenomena due to near-field effects, which would be applied to nanostructure fabrication, and to clarify the elemental process in nanofabrication. As described below, we have obtained a theoretical model to predict localized photons dressed by coherent (multiple) phonons, which is inherent phenomenon in the relevant system, as well as qualitative understanding of the mechanism of nanodot formation using localized photons.
In the first year, we have formulated optical response at the nanoscale, using a quasiparticle basis, which puts electronic and vibrational excitations on an equal footing with photons. As a result, we showed the occurrence of a localized photon dressed
… More
by multi-(coherent) phonons, which cannot be driven by a perturbation theory, clarifying the occurrence conditions. Such photons are shown to be localized at the edge of a pseudo-one dimensional nanometric system by anti- Hermitian transformation of the interaction between a photon and a phonon localized due to the impurities doped in the system. Then the mechanism of spatial localization of photons dressed by coherent phonons was clarified, and it followed that molecular photodissociation with optical near fields can be assisted by molecular vibrational excitation forbidden in case of propagating far fields, and that unresolved problems on the experimental results are explained consistently. Finally, we have examined the deposition process of nanodot fabrication with optical near fields to find a possibility of the dot-size control.
The approach employed is unique and important not only from the principle viewpoint to break the diffraction limit of light, but also from the viewpoint of foundation for nanophotonics and nanofabrication controlled. Less
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[Journal Article] Principles of Nanophotonics2008
Author(s)
M., Ohtsu, K., Kobayashi, T., Kawazoe, T., Yatsui, M., Naruse
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Journal Title
CRC Press, Taylor & Francis (in press)
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Demonstration of nanophotonic NOT gate using near-field optically coupled quantum dots2006
Author(s)
T., Kawazoe, K., Kobayashi, K., Akahane, M., Naruse, N., Yamamoto, M., Ohtsu
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Journal Title
Applied Physics B 84-1-2
Pages: 243-246
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Nanophotonic computing based on optical near-field interactions between quantum dots2005
Author(s)
M., Naruse, T., Miyazaki, T., Kawazoe, S., Sangu, K., Kobavashi, F., Kubota, M., Ohtsu
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Journal Title
IEICE Transactions on Electronics E88-C-9
Pages: 1817-1823
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Nanometric summation architecture using optical near-field interaction between quantum dots2005
Author(s)
M., Naruse, T., Miyazaki, F., Kubota, T., Kawazoe, K., Kobavashi, S., Sangu, M., Ohtsu
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Journal Title
Optics Letters 20-2
Pages: 201-203
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Two dimensional-lattice model for an optical near-field probe2007
Author(s)
A., Sato, Y., Tanaka, F., Minami, K., Kobayashi
Organizer
16th Nano Optics Meeting, Japan Society of Applied Physics, Optical Society of Japan
Place of Presentation
Kobe, Japan
Year and Date
20070713-14
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Measurement of the near-field Spectroscopy of InAlAs Quantum Dots for Nanophotonic devices2005
Author(s)
T., Kawazoe, K, Kobayashi, K., Akahane, N., Yamamoto, M., Naruse, M., Ohtsu
Organizer
66th Autumn Meeting, Japan Society of Applied Physics
Place of Presentation
Tokushima, Japan
Year and Date
20050907-11
Description
「研究成果報告書概要(欧文)」より
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