N
Noritsugu Shiokawa
Researcher at University of Tokyo
Publications - 5
Citations - 840
Noritsugu Shiokawa is an academic researcher from University of Tokyo. The author has contributed to research in topics: Raman cooling & Optical physics. The author has an hindex of 3, co-authored 5 publications receiving 789 citations.
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Journal ArticleDOI
Novel Optical Trap of Atoms with a Doughnut Beam
TL;DR: In this article, a Laguerre-Gaussian (doughnut) beam whose frequency is blue detuned to the atomic transition was used to trap neutral atoms in the dark core of the doughnut beam with the help of two additional laser beams.
Journal ArticleDOI
Control of Light Pulse Propagation with Only a Few Cold Atoms in a High-Finesse Microcavity
Y. Shimizu,Noritsugu Shiokawa,Noriaki Yamamoto,Mikio Kozuma,Takahiro Kuga,Lu Deng,Edward W. Hagley +6 more
TL;DR: Propagation of a light pulse through a high-Q optical microcavity containing a few cold atoms (N<10) in its cavity mode is investigated experimentally and up to 170 ns propagation lead time ("superluminal"), and 440 ns propagation delay time (subluminals) are observed.
Journal ArticleDOI
Pulsed polarization gradient cooling in an optical dipole trap with a Laguerre-Gaussian laser beam
TL;DR: In this article, a blue-detuned Laguerre-Gaussian (doughnut) laser beam was used to trap cold rubidium atoms by optical dipole force, and polarization gradient cooling was applied to the trapped atoms to suppress the trap loss due to heating caused by random photon scattering of the trapping light.
Journal ArticleDOI
Spectroscopic properties of cold rubidium atoms in a magneto-optic trap
TL;DR: In this paper, the authors investigated spectroscopic properties of cold 85 Rb atoms in a magneto-optic trap and recorded both the transmission and reflection spectra of the trapped atoms.
Proceedings ArticleDOI
Real-time detection of single atoms with transverse mode of high-finesse optical micro cavity
TL;DR: In this paper, the authors used a cell magneto optical trap (MOT) to trap a single atom with a single photon in a high-finesse optical micro cavity, which can be observed in situ and in real time by detecting intensity change on the transmission of a blue-shifted laser beam.