Zobrazeno 1 - 10
of 212
pro vyhledávání: '"Katayama, Ikufumi"'
Autor:
Kritzell, T. Elijah, Doumani, Jacques, Asano, Tobias, Yamada, Sota, Tay, Fuyang, Xu, Hongjing, Yan, Han, Katayama, Ikufumi, Takeda, Jun, Nevidomskyy, Andriy, Nojiri, Hiroyuki, Bamba, Motoaki, Baydin, Andrey, Kono, Junichiro
The interaction of an ensemble of two-level atoms and a quantized electromagnetic field, described by the Dicke Hamiltonian, is an extensively studied problem in quantum optics. However, experimental efforts to explore similar physics in condensed ma
Externí odkaz:
http://arxiv.org/abs/2409.17339
Autor:
Hernandez, Felix G. G., Baydin, Andrey, Chaudhary, Swati, Tay, Fuyang, Katayama, Ikufumi, Takeda, Jun, Nojiri, Hiroyuki, Okazaki, Anderson K., Rappl, Paulo H. O., Abramof, Eduardo, Rodriguez-Vega, Martin, Fiete, Gregory A., Kono, Junichiro
We have studied the magnetic response of transverse optical phonons in Pb$_{1-x}$Sn$_{x}$Te films. Polarization-dependent terahertz magnetospectroscopy measurements revealed Zeeman splittings and diamagnetic shifts, demonstrating that these phonon mo
Externí odkaz:
http://arxiv.org/abs/2208.12235
Magnetically Tuned Continuous Transition from Weak to Strong Coupling in Terahertz Magnon Polaritons
Autor:
Baydin, Andrey, Hayashida, Kenji, Makihara, Takuma, Tay, Fuyang, Ma, Xiaoxuan, Ren, Wei, Ma, Guohong, Noe II, G. Timothy, Katayama, Ikufumi, Takeda, Jun, Nojiri, Hiroyuki, Cao, Shixun, Bamba, Motoaki, Kono, Junichiro
Depending on the relative rates of coupling and dissipation, a light-matter coupled system is either in the weak- or strong-coupling regime. Here, we present a unique system where the coupling rate continuously increases with an externally applied ma
Externí odkaz:
http://arxiv.org/abs/2208.10030
Autor:
Baydin, Andrey, Hernandez, Felix G. G., Rodriguez-Vega, Martin, Okazaki, Anderson K., Tay, Fuyang, Noe II, G. Timothy, Katayama, Ikufumi, Takeda, Jun, Nojiri, Hiroyuki, Rappl, Paulo H. O., Abramof, Eduardo, Fiete, Gregory A., Kono, Junichiro
Publikováno v:
Phys. Rev. Lett. 128, 075901 (2022)
PbTe crystals have a soft transverse optical phonon mode in the terahertz frequency range, which is known to efficiently decay into heat-carrying acoustic phonons, resulting in anomalously low thermal conductivity. Here, we studied this phonon via po
Externí odkaz:
http://arxiv.org/abs/2107.07616
Autor:
Makihara, Takuma, Hayashida, Kenji, Noe II, G. Timothy, Li, Xinwei, Peraca, Nicolas Marquez, Ma, Xiaoxuan, Jin, Zuanming, Ren, Wei, Ma, Guohong, Katayama, Ikufumi, Takeda, Jun, Nojiri, Hiroyuki, Turchinovich, Dmitry, Cao, Shixun, Bamba, Motoaki, Kono, Junichiro
Exotic quantum vacuum phenomena are predicted in cavity quantum electrodynamics (QED) systems with ultrastrong light-matter interactions. Their ground states are predicted to be vacuum squeezed states with suppressed quantum fluctuations. The source
Externí odkaz:
http://arxiv.org/abs/2008.10721
Autor:
Mashiko, Hiroki, Chen, Ming-Chang, Asaga, Koji, Oshima, Akihiro, Katayama, Ikufumi, Takeda, Jun, Nishikawa, Tadashi, Oguri, Katsuya
We characterized spatially resolved spectral phase interferometry with an isolated attosecond pulse (IAP). The measured spatial-spectral interferogram and spectral interference fringe visibility show a high degree of IAPs spatial and spectral coheren
Externí odkaz:
http://arxiv.org/abs/2005.08504
Autor:
Li, Xinwei, Yoshioka, Katsumasa, Xie, Ming, Noe II, G. Timothy, Lee, Woojoo, Peraca, Nicolas Marquez, Gao, Weilu, Hagiwara, Toshio, Orjan, Handegard S., Nien, Li-Wei, Nagao, Tadaaki, Kitajima, Masahiro, Nojiri, Hiroyuki, Shih, Chih-Kang, MacDonald, Allan H., Katayama, Ikufumi, Takeda, Jun, Fiete, Gregory A., Kono, Junichiro
Publikováno v:
Phys. Rev. B 100, 115145 (2019)
We report results of terahertz Faraday and Kerr rotation spectroscopy measurements on thin films of $\text{Bi}_{1-x}\text{Sb}_{x}$, an alloy system that exhibits a semimetal-to-topological-insulator transition as the Sb composition $x$ increases. By
Externí odkaz:
http://arxiv.org/abs/1907.00137
Autor:
Dharmavarapu, Raghu, Izumi, Ken-ichi, Katayama, Ikufumi, Ng, SoonHock, Vongsvivut, Jitraporn, Tobin, Mark J., AleksandrKuchmizhak, Nishijima, Yoshiaki, Bhattacharya, Shanti, SauliusJuodkazis
Publikováno v:
Nanophotonics 2019
Metasurfaces are engineered thin surfaces comprising two dimensional (2D) arrays of sub-wavelength spaced and sub-wavelength sized resonators. Metasurfaces can locally manipulate the amplitude, phase and polarization of light with high spatial resolu
Externí odkaz:
http://arxiv.org/abs/1906.10292
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Autor:
Noe II, G. Timothy, Katayama, Ikufumi, Katsutani, Fumiya, Allred, James J., Horowitz, Jeffrey A., Sullivan, David M., Zhang, Qi, Sekiguchi, Fumiya, Woods, Gary L., Hoffmann, Matthias C., Nojiri, Hiroyuki, Takeda, Jun, Kono, Junichiro
We have developed a single-shot terahertz time-domain spectrometer to perform optical-pump/terahertz-probe experiments in pulsed, high magnetic fields up to 30 T. The single-shot detection scheme for measuring a terahertz waveform incorporates a refl
Externí odkaz:
http://arxiv.org/abs/1608.08569