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Outline

Our team aims to elucidate the quantum states of materials and the conversion processes of light energy by developing new light sources in the terahertz and infrared regions and making full use of new spectroscopic methods based on these light sources. In particular, in the terahertz region, we will generate frequency-stabilized light and use it to coherently control the quantum state of matter. We will also focus on non-classical light and develop new nonlinear spectroscopy and imaging methods that make use of its characteristics, in order to clarify the true nature of matter that has not been elucidated until now.

Selected Publications

1. Katayama, I., Uchida, K., Takashina, K., Kishioka, A., Kaiho, M., Kusaba, S., Tamaki R., Shudo, K., Kitajima, M., Thien Duc Ngo, Nagao, T., Takeda, J., Tanaka, K. Matsunaga, T.:“Three-dimensional bonding anisotropy of bulk hexagonal metal titanium demonstrated by high harmonic generation” Communications Physics (2024).
2. Nakano, A., Uchida, K., Tomioka, Y., Takaya, M., Okimoto, U., Tanaka, K,:“Dominant role of charge ordering on high harmonic generation in Pr0.6Ca0.4MnO3”, Physical Review Research (2024).
3. Uchida, K., Tanaka, K.:“High harmonic Mach–Zehnder interferometer for probing sub-laser-cycle electron dynamics in solids”, Optica 11(8) 1130-1130 (2024).
4. Arikawa, T., Kim, J., Mukai, T., Nishigami, N., Fujita, M., Nagatsuma, T., Tanaka, K.: “Phase-resolved measurement and control of ultrafast dynamics in terahertz electronic oscillators”, Nature Communications 15(1) (2024).
5. Takeda, K. S., Uchida, K., Nagai, K., Kusaba, S., Takahashi, S., Tanaka, K.: “Ultrafast Electron-Electron Scattering in Metallic Phase of 2H−NbSe2 Probed by High Harmonic Generation” Physical Review Letters (2024).

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