Frequency measurement of the clock transition of an indium ion sympathetically-cooled in a linear trap

Abstract

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 electromagnetic field and as the coolant for preparing the cold In+. The frequency is determined to be 1 267 402 452 901 049.9 (6.9) Hz by averaging 36 measurements using an optical frequency comb referenced to the frequency standards located in the same site.

References in corpus (14)

• Single-Ion Atomic Clock with $3\times 10^{-18}$ Systematic Uncertainty
• Frequency ratio of two optical clock transitions in ${}^{171}$Yb${}^{+}$ and constraints on the time-variation of fundamental constants
• Destabilization of dark states and optical spectroscopy in Zeeman-degenerate atomic systems
• Systematic study of the ${}^{87}$Sr clock transition in an optical lattice
• Absolute frequency measurement of the 40Ca+ S1/2 - D5/2 clock transition
• Precision calculation of blackbody radiation shifts for optical frequency metrology
• Sympathetic ground state cooling and time-dilation shifts in an ${}^{27}{\text{Al}}^{+}$ optical clock
• Absolute frequency measurement of the In${}^{+}$ clock transition with a mode-locked laser
• Linear Paul trap design for an optical clock with Coulomb crystals
• A high-precision rf trap with minimized micromotion for an In+ multiple-ion clock
• Direct comparison of a Ca+ single ion clock against a Sr optical lattice clock
• SI-traceable measurement of an optical frequency at low $10^{-16}$ level without a local primary standard
• Intermittent optical frequency measurements to reduce the dead time uncertainty of frequency link
• Absolute frequency measurement with uncertainty below $1\times 10^{-15}$ using International Atomic Time

Cited by in corpus (9)

• Atomic Clocks for Geodesy
• Controlling systematic frequency uncertainties at the $10^{-19}$ level in linear Coulomb crystals
• Narrow-line Cooling and Determination of Magic Wavelength of Cd
• Lorentz and CPT Tests with Clock-Comparison Experiments
• ${}^{115}$In${}^{+}$-${}^{172}$Yb${}^{+}$ Coulomb crystal clock with $2.5\times 10^{-18}$ systematic uncertainty
• Frequency ratio of an ${}^{115}$In${}^{+}$ ion clock and a ${}^{87}$Sr optical lattice clock
• Phase-stabilized UV light at 267 nm through twofold second harmonic generation
• Deterministic preparation of a dual-species two-ion crystal
• Bichromatic UV detection system for atomically-resolved imaging of ions