Quantum Description of Optical Near Fields Including Vibrational Degrees of Freedom
Quantum theoretical description of optical near fields is discussed from the viewpoint of effective photon–matter interactions and localized photons. On the basis of experimental data of photodissociation of molecules, a phonofs role is emphasized in light-matter interacting system at the nanoscale. After the brief introduction of localized and delocalized phonon modes, a simple extended model for a pseudo one-dimensional optical near-field probe system is presented in order to discuss the mechanism of photon localization in space as well as the role of phonons at the nanoscale.
KeywordsCoherent State Electronic Excitation Energy Impurity Site Exciton Polariton Phonon Field
The authors are grateful to H. Hori (Yamanashi Univ.), S. Sangu (Ricoh Co., Ltd.), A. Shojiguchi (NEC Co.), K. Kitahara (International Christian Univ.), T. Yatsui (Japan Science and Technology Agency), M. Tsukada (Waseda Univ.), H. Nejo (National Institute for Materials Science), M. Naruse (National Institute of Information and Communications Technology), M. Ikezawa (Univ. of Tsukuba), A. Sato (Tokyo Institute of Technology), and I. Banno (Yamanashi Univ.) for stimulating discussions. This work was supported in part by the twenty-first Century COE program at Tokyo Institute of Technology “Nanometer-Scale Quantum Physics” and by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan, and by CREST, Japan Science and Technology Agency.
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