Research theme for competitive and other funds (9)：
2020 - 2023 Development of Y-band solid-state astro-comb with long-term stability for exoplanet search
2019 - 2022 炭素原子気体の精密分光と冷却の実現
2017 - 2020 Realization of laser cooling of positronium atoms and test of the weak equivalence principle using an optical frequency comb
2014 - 2018 Research on formation of quantum ordered states in ultra cold electron-hole system by spectroscopy of electron states under extreme environments
2014 - 2017 Development of ultrahigh repetition rate, ultraviolet light source for efficient high-resolution photoelectron spectroscopy
2013 - 2016 Precision measurement of quantum degenerate bulk excitons by excitonic Lyman spectroscopy
2007 - 2008 Study of excitonic superfluidity by excitonic Lyman spectroscopy
2005 - 2006 多重共鳴コヒーレント励起法による励起子系の巨視的コヒーレンスの発現と制御
励起子のボース・アインシュタイン凝縮
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Papers (77)：
Kenji Shu, Naoki Miyamoto, Yuto Motohashi, Ryosuke Uozumi, Yohei Tajima, Kosuke Yoshioka. Development of a laser for chirp cooling of positronium to near the recoil limit using a chirped pulse-train generator. Physical Review A. 2024. 109. 4
Kenji Shu, Kyohei Yamada, Kaori Hashidate, Akira Ishida, Toshio Namba, Shoji Asai, Makoto Kuwata-Gonokami, Yohei Tajima, Eunmi Chae, Kosuke Yoshioka, et al. Development of a porous silica cavity for laser excitation of confined positronium. JJAP Conference Proceedings. 2023. 9. 011202-011202
J. Omachi, N. Naka, K. Yoshioka, M. Kuwata-Gonokami. Mid-infrared dielectric response of Fermi-degenerate electron-hole droplets in diamond. Physical Review B. 2022. 106. 23
Yusuke Morita, Kosuke Yoshioka, Makoto Kuwata-Gonokami. Observation of Bose-Einstein condensates of excitons in a bulk semiconductor. Nature Communications. 2022. 13. 1
Takashi Sakamoto, Kosuke Yoshioka. Observation of two-photon excitation-induced fluorescence of ground-state neutral carbon atoms in vacuum generated by laser ablation of graphite. Physical Review A. 2022. 106. 5
Yu Nagashima, Atsushi Iwata, Kosuke Yoshioka, Junko Omachi, Jun Shimizu, Tatsushi Toda, Junji Yumoto, Makoto Kuwata Gonokami. Label-free visualization of abnormal lipid accumulation in tissues from Fabry disease patients using Raman spectroscopic marker of globotriaosylceramide. BRAIN PATHOLOGY. 2019. 29. 29-29
Ishida A., Shu K., Yamada K., Hashidate K., Namba T., Asai S., Kuwata-Gonokami M., Tajima Y., Chae E., Yoshioka K., et al. Development of target materials for high-density positronium formation to realize Bose-Einstein condensation. Meeting Abstracts of the Physical Society of Japan. 2019. 74.1. 2. 2534-2534
周健治, 周健治, 山田恭平, 橋立佳央理, 橋立佳央理, 石田明, 難波俊雄, 浅井祥仁, 五神真, 田島陽平, et al. ボース・アインシュタイン凝縮実現を目指したポジトロニウム冷却 II. アイソトープ・放射線研究発表会要旨集. 2019. 56th. 76
Ishida A., Shu K., Yamada K., Hashidate K., Namba T., Asai S., Kuwata-Gonokami M., Tajima Y., Chae E., Yoshioka K., et al. High-density and cold positronium formation for Bose-Einstein condensation. Meeting Abstracts of the Physical Society of Japan. 2019. 74.2. 2231-2231
