Intermittent optical frequency measurements to reduce the dead time uncertainty of frequency link

Abstract

The absolute frequency of the ${}^{87}\mathrm{Sr}$ lattice clock transition was evaluated with an uncertainty of $1.1\times 10^{-15}$ using a frequency link to the international atomic time (TAI). The frequency uncertainty of a hydrogen maser used as a transfer oscillator was reduced by homogeneously distributed intermittent measurement over a five-day grid of TAI. Three sets of four or five days measurements as well as systematic uncertainty of the clock at $8.6\times 10^{-17}$ have resulted in an absolute frequency of ${}^{87}\mathrm{Sr}{}^1{S}_0-{}^3{P}_0$ clock transition to be 429 228 004 229 872.85 (47) Hz.

References in corpus (13)

• Systematic evaluation of an atomic clock at 2e-18 total uncertainty
• Sr lattice clock at 1x10^{-16} fractional uncertainty by remote optical evaluation with a Ca clock
• Frequency ratio of two optical clock transitions in ${}^{171}$Yb${}^{+}$ and constraints on the time-variation of fundamental constants
• Improved limit on a temporal variation of $m_p/m_e$ from comparisons of Yb${}^{+}$ and Cs atomic clocks
• The absolute frequency of the 87Sr optical clock transition
• High accuracy correction of blackbody radiation shift in an optical lattice clock
• Improved frequency measurement of a one-dimensional optical lattice clock with a spin-polarized fermionic ${}^{87}$Sr isotope
• Measuring the frequency of a Sr optical lattice clock using a 120-km coherent optical transfer
• Carrier-phase Two-Way Satellite Frequency Transfer over a Very Long Baseline
• An Optical Lattice Clock with Spin-polarized 87Sr Atoms
• One-Dimensional Optical Lattice Clock with a Fermionic 171Yb Isotope
• Direct comparison of a Ca+ single ion clock against a Sr optical lattice clock
• Geophysical applicability of atomic clocks: direct continental geoid mapping

Cited by in corpus (17)

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• Realization of a time-scale with an accurate optical lattice clock
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• Lorentz and CPT Tests with Clock-Comparison Experiments
• SI-traceable measurement of an optical frequency at low $10^{-16}$ level without a local primary standard
• A strontium optical lattice clock with $1\times 10^{-17}$ uncertainty and measurement of its absolute frequency
• Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock at KRISS Relative to the SI Second
• ${}^{171}$Yb${}^{+}$ optical clock with $2.2\times 10^{-18}$ systematic uncertainty and absolute frequency measurements
• Absolute frequency measurement with uncertainty below $1\times 10^{-15}$ using International Atomic Time
• Absolute frequency measurement of the ${}^2$S${}_{1/2}{\to }^2$F${}_{7/2}$ optical clock transition in ${}^{171}$Yb${}^{+}$ with an uncertainty of $4\times 10^{-16}$ using a frequency link to International Atomic Time
• Absolute frequency of ${}^{87}\mathrm{Sr}$ at $1.8\times 10^{-16}$ uncertainty by reference to remote Primary Frequency Standards
• Frequency measurement of the clock transition of an indium ion sympathetically-cooled in a linear trap
• Absolute frequency measurement of the 87Sr optical lattice clock at NTSC using International Atomic Time
• Dual-Mode Operation of an Optical Lattice Clock Using Strontium and Ytterbium Atoms
• Absolute frequency measurements with a robust, transportable ^{40}Ca^{+} optical clock
• A High-frequency Geodetic VLBI Experiment for Optical Clock Comparison