107 citations · 284 across the 6 of their papers we have counts for
6 papers
Frequency ratio of an In ion clock and a Sr optical lattice clock
Nozomi Ohtsubo, Ying Li, Nils Nemitz +4
We report on the first frequency ratio measurement of an In+ single ion clock and a Sr optical lattice clock. A hydrogen maser serves as a reference oscillator to me…
Frequency measurement of the clock transition of an indium ion sympathetically-cooled in a linear trap
Nozomi Ohtsubo, Ying Li, Kensuke Matsubara +2
We report frequency measurement of the clock transition in an 115In+ ion sympathetically-cooled with Ca+ ions in a linear rf trap. The Ca+ ions are used as a probe of the external…
Direct comparison of a Ca+ single ion clock against a Sr optical lattice clock
Kensuke Matsubara, Hidekazu Hachisu, Ying Li +7
Optical frequency comparison of the 40Ca+ clock transition ν_{Ca} (2S1/2-2D5/2, 729nm) against the 87Sr optical lattice clock transition ν_{Sr}(1S0-3P0, 698nm) has resulted in a fr…
Stability Transfer between Two Clock Lasers Operating at Different Wavelengths for Absolute Frequency Measurement of Clock Transition in 87Sr
A. Yamaguchi, N. Shiga, S. Nagano +5
We demonstrated transferring the stability of one highly stable clock laser operating at 729 nm to another less stable laser operating at 698 nm. The two different wavelengths were…
Direct Comparison of Distant Optical Lattice Clocks at the Uncertainty
Atsushi Yamaguchi, Miho Fujieda, Motohiro Kumagai +7
Fiber-based remote comparison of Sr lattice clocks in 24 km distant laboratories is demonstrated. The instability of the comparison reaches over an averagi…
Buffer gas induced collision shift for the Sr clock transition
Nobuyasu Shiga, Ying Li, Hiroyuki Ito +5
Precision saturation spectroscopy of the is performed in a vapor cell filled with various rare gas including He, Ne, Ar, and Xe. By continuously calibra…