Zobrazeno 1 - 10 of 128 pro vyhledávání: '"Yosuke Kayanuma"'
1
Akademický článek
Floquet-Landau-Zener interferometry: Usefulness of the Floquet theory in pulse-laser-driven systems
Autor: Tatsuhiko N. Ikeda, Satoshi Tanaka, Yosuke Kayanuma
Publikováno v: Physical Review Research, Vol 4, Iss 3, p 033075 (2022)
We develop the Landau-Zener transfer matrix theory for the instantaneous Floquet states (IFSs) for quantum systems driven by a strong pulse laser. Applying this theory to the pulse excitation probability in two-level quantum systems, we show unexpect
Externí odkaz: https://doaj.org/article/2677dd9153f94d39bec75e07c7128791
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2
Akademický článek
Coherent control theory and experiment of optical phonons in diamond
Autor: Hiroya Sasaki, Riho Tanaka, Yasuaki Okano, Fujio Minami, Yosuke Kayanuma, Yutaka Shikano, Kazutaka G. Nakamura
Publikováno v: Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
Abstract The coherent control of optical phonons has been experimentally demonstrated in various physical systems. While the transient dynamics for optical phonons can be explained by phenomenological models, the coherent control experiment cannot be
Externí odkaz: https://doaj.org/article/344de74e64c04393ba30af6d52f2aafa
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4
Theory for coherent control of longitudinal optical phonons in GaAs using polarized optical pulses with relative phase locking
Autor: Kazutaka G. Nakamura, Yosuke Kayanuma, Itsuki Takagi
Publikováno v: Physical Review B. 104
A theoretical model for the coherent control of longitudinal optical phonons in GaAs (001) by double-pulse excitation was derived using a simplified band model and the allowed and forbidden Raman scattering. The time evolution of the electron-phonon
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7d64a12d51c768960af94a7dfd7faa34
https://doi.org/10.1103/physrevb.104.134301
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6
Transmission of a single electron through a Berry's ring
Autor: Maseim Bassis Kenmoe, Yosuke Kayanuma
A theoretical model of transmission and reflection of an electron with spin is proposed for a mesoscopic ring with rotating localized magnetic moment. This model may be realized in a pair of domain walls connecting two ferromagnetic domains with oppo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a12e2efe9c331516fc7bc1c461ca2b12
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8
Coherent control of 40-THz optical phonons in diamond using femtosecond optical pulses
Autor: Hiroyuki Tanabe, Kazutaka G. Nakamura, Fujio Minami, Hana Matsumoto, Tetsuya Kimata, Yosuke Kayanuma, Kazuma Yoda
Publikováno v: Physical Review B. 101
Coherent control is an optical technique to manipulate quantum states of matter. The coherent control of 40-THz optical phonons in diamond was demonstrated by using a pair of sub-10-fs optical pulses. The optical phonons were detected via transient t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6ee151e0a9bae68f1e1227e6e2bafc7
https://doi.org/10.1103/physrevb.101.174301
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9
Ultrafast Quantum-path Interferometry Revealing the Generation Process of Coherent Phonons
Autor: Yosuke Kayanuma, Yutaka Shikano, Kazutaka G. Nakamura, Rintaro Kase, Y. Okuda, yu mishima, Takashi Kitashima, Kensuke Yokota
Optical dual-pulse pumping actively creates quantum-mechanical superposition of the electronic and phononic states in a bulk solid. We here made transient reflectivity measurements in an n-GaAs using a pair of relative-phase-locked femtosecond pulses
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce4377cd8441b4635be4b11362c6f819
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