Zobrazeno 1 - 10
of 6 512
pro vyhledávání: '"Sasao, A."'
Autor:
Hara, Hideaki, Miyamoto, Yuki, Han, Junseok, Omoto, Riku, Imai, Yasutaka, Yoshimi, Akihiro, Yoshimura, Koji, Yoshimura, Motohiko, Sasao, Noboru
We conduct a theoretical study to understand the periodic superradiance observed in an Er:YSO crystal. First, we construct a model based on the Maxwell-Bloch equations for a reduced level system, a pair of superradiance states and a population reserv
Externí odkaz:
http://arxiv.org/abs/2412.02248
Autor:
Guan, Ming, Bartokos, Michael, Beeks, Kjeld, Fukunaga, Yuta, Hiraki, Takahiro, Masuda, Takahiko, Miyamoto, Yuki, Okage, Ryoichiro, Okai, Koichi, Sasao, Noboru, Schaden, Fabian, Schumm, Thorsten, Shimizu, Koutaro, Takatori, Sayuri, Yoshimi, Akihiro, Yoshimura, Koji
Thorium-229, with its exceptionally low-energy nuclear excited state, is a key candidate for developing nuclear clocks. $^{229}$Th-doped CaF$_2$ crystals, benefiting from calcium fluoride's wide band gap, show great promise as solid-state nuclear clo
Externí odkaz:
http://arxiv.org/abs/2410.18134
We confront measurable neutrino degrees of freedom $N_{\rm eff}$ and summed neutrino mass in the early universe to particle physics at the energy scale beyond the standard model (BSM), in particular including the issue of neutrino mass type distincti
Externí odkaz:
http://arxiv.org/abs/2405.17760
Autor:
Hiraki, Takahiro, Okai, Koichi, Bartokos, Michael, Beeks, Kjeld, Fujimoto, Hiroyuki, Fukunaga, Yuta, Haba, Hiromitsu, Kasamatsu, Yoshitaka, Kitao, Shinji, Leitner, Adrian, Masuda, Takahiko, Ming, Guan, Nagasawa, Nobumoto, Ogake, Ryoichiro, Pimon, Martin, Pressler, Martin, Sasao, Noboru, Schaden, Fabian, Schumm, Thorsten, Seto, Makoto, Shigekawa, Yudai, Shimizu, Koutaro, Sikorsky, Tomas, Tamasaku, Kenji, Takatori, Sayuri, Watanabe, Tsukasa, Yamaguchi, Atsushi, Yoda, Yoshitaka, Yoshimi, Akihiro, Yoshimura, Koji
Publikováno v:
Nat Commun 15, 5536 (2024)
The radioisotope Th-229 is renowned for its extraordinarily low-energy, long-lived nuclear first-excited state. This isomeric state can be excited by VUV lasers and the transition from the ground state has been proposed as a reference transition for
Externí odkaz:
http://arxiv.org/abs/2405.09577
Fluorescence spectra of the $8P_{J} \rightarrow 6P_{J'}$ ($J$ and $J'$ = 3/2, 1/2) electric quadrupole transition of cesium atoms have been observed with a heated cesium vapor cell. We determined the ratio of the transition probabilities of $8P_{J}\r
Externí odkaz:
http://arxiv.org/abs/2405.06257
A Boolean function $f({\vec x})$ is sensitive to bit $x_i$ if there is at least one input vector $\vec x$ and one bit $x_i$ in $\vec x$, such that changing $x_i$ changes $f$. A function has sensitivity $s$ if among all input vectors, the largest numb
Externí odkaz:
http://arxiv.org/abs/2306.14401
Autor:
Hara, Hideaki, Han, Junseok, Imai, Yasutaka, Sasao, Noboru, Yoshimi, Akihiro, Yoshimura, Koji, Yoshimura, Motohiko, Miyamoto, Yuki
We observed periodic optical pulses from an Er:YSO crystal during irradiating with an continuous-wave excitation laser. We refer to this new phenomenon as "periodic super-radiance". This periodicity can be understood qualitatively by a simple model,
Externí odkaz:
http://arxiv.org/abs/2304.08806
Autor:
Masuda, Takahiko, Hiramoto, Ayami, Ang, Daniel G., Meisenhelder, Cole, Panda, Cristian D., Sasao, Noboru, Uetake, Satoshi, Wu, Xing, DeMille, David P., Doyle, John M., Gabrielse, Gerald, Yoshimura, Koji
Publikováno v:
Opt. Express 31(2), 1943 (2023)
The application of silicon photomultiplier (SiPM) technology for weak-light detection at a single photon level has expanded thanks to its better photon detection efficiency in comparison to a conventional photomultiplier tube (PMT). SiPMs with large
Externí odkaz:
http://arxiv.org/abs/2211.04933
Autor:
Takahiro Hiraki, Koichi Okai, Michael Bartokos, Kjeld Beeks, Hiroyuki Fujimoto, Yuta Fukunaga, Hiromitsu Haba, Yoshitaka Kasamatsu, Shinji Kitao, Adrian Leitner, Takahiko Masuda, Ming Guan, Nobumoto Nagasawa, Ryoichiro Ogake, Martin Pimon, Martin Pressler, Noboru Sasao, Fabian Schaden, Thorsten Schumm, Makoto Seto, Yudai Shigekawa, Kotaro Shimizu, Tomas Sikorsky, Kenji Tamasaku, Sayuri Takatori, Tsukasa Watanabe, Atsushi Yamaguchi, Yoshitaka Yoda, Akihiro Yoshimi, Koji Yoshimura
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract The radioisotope thorium-229 (229Th) is renowned for its extraordinarily low-energy, long-lived nuclear first-excited state. This isomeric state can be excited by vacuum ultraviolet (VUV) lasers and 229Th has been proposed as a reference tra
Externí odkaz:
https://doaj.org/article/16a44354d3d94916bf8e46d4a3ff9a73
Autor:
Hiramoto, A., Masuda, T., Ang, D. G., Meisenhelder, C., Panda, C., Sasao, N., Uetake, S., Wu, X., Demille, D., Doyle, J. M., Gabrielse, G., Yoshimura, K.
This report shows the design and the performance of a large area Silicon Photomultiplier (SiPM) module developed detection of fluorescent light emitted from a 10 cm scale volume. The module was optimized for the planned ACME III electron electric dip
Externí odkaz:
http://arxiv.org/abs/2210.05727