97 citations · 360 across the 11 of their papers we have counts for
11 papers
Prospects for Polar Molecular Ion Optical Probe of Varying Proton-Electron Mass Ratio
Mark G. Kokish, Patrick R. Stollenwerk, Masatoshi Kajita +1
Molecules with deep vibrational potential wells provide optical intervals sensitive to variation in the proton-electron mass ratio (). On one hand, polar molecules are of intere…
Calculations of electronic properties and vibrational parameters of alkaline-earth lithides: MgLi^+ and CaLi^+
Renu Bala, H. S. Nataraj, Minori Abe +1
The ^1Σ^+ electronic ground states of MgLi^+ and CaLi^+ molecular ions are investigated for their spectroscopic constants and properties such as the dipole- and quadrupole moments,…
Ab initio calculations of spectroscopic constants and properties of BeLi +
Renu Bala, H. S. Nataraj
We have calculated the ground state spectroscopic constants and the molecular properties, of a molecular ion BeLi + , such as dipole moment, quadrupole moment and dipole polarizabi…
Two-step pulse observation to improve resonance contrast for coherent population trapping atomic clock
Yuichiro Yano, Shigeyoshi Goka, Masatoshi Kajita
We study resonance contrast by a two-step pulse observation method to enhance the frequency stability of coherent population trapping (CPT) atomic clocks. The proposed method is a…
Accuracy estimation of the 16O2+ transition frequencies targeting the search for the variation in mp/me
Masatoshi Kajita
The precise measurement of molecular vibrational transition frequencies is useful in the search for variation in the proton-to-electron mass ratio μ. Homonuclear diatomic molecules…
Two-step pulse observation for Raman-Ramsey coherent population trapping atomic clocks
Yuichiro Yano, Shigeyoshi Goka, Masatoshi Kajita
We propose a two-step pulse observation method to enhance frequency stability for coherent population trapping (CPT) atomic clocks. The proposed method is a Raman-Ramsey scheme wit…
Dipole Polarizability of Alkali-Metal (Na, K, Rb) - Alkaline-Earth-Metal (Ca,Sr) Polar molecules - Prospects of Alignment
Geetha Gopakumar, Minori Abe, Masahiko Hada +1
Electronic open-shell ground-state properties of selected alkali-metal (AM) - alkaline-earth-metal (AEM) polar molecules are investigated. We determine potential energy curves of t…
Theoretical and experimental investigation of the light shift in Ramsey coherent population trapping
Yuichiro Yano, Wujie Gao, Shigeyoshi Goka +1
The ac Stark shift (or light shift) of the 6S (F 3 4) transition in Cs, as observed through coherent population trapping under pulsed e…
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…
An ion ring in a linear multipole trap for optical frequency metrology
Caroline Champenois, Mathieu Marciante, Jofre Pedregosa-Guttierez +3
A ring crystal of ions trapped in a linear multipole trap is studied as a basis for an optical frequency standard. The equilibrium conditions and cooling possibilities are discusse…
Suppression of inelastic collisions of polar state molecules in an electrostatic field
Alexander V. Avdeenkov, Masatoshi Kajita, John L. Bohn
Collisions of polar state molecules at ultralow energies are considered, within a model that accounts for long-range dipole-dipole interactions, plus rotation of the molecu…