${}^{87}$Sr lattice clock with inaccuracy below 10${}^{-15}$

Abstract

Aided by ultra-high resolution spectroscopy, the overall systematic uncertainty of the ${}^1{S}_0$-${}^3{P}_0$ clock resonance for lattice-confined ${}^{87}$Sr has been characterized to $9\times 10^{-16}$. This uncertainty is at a level similar to the Cs-fountain primary standard, while the potential stability for the lattice clocks exceeds that of Cs. The absolute frequency of the clock transition has been measured to be 429,228,004,229,874.0(1.1) Hz, where the $2.5\times 10^{-15}$ fractional uncertainty represents the most accurate measurement of a neutral-atom-based optical transition frequency to date.

4 pages, 4 figures, 2 tables

References in corpus (2)

• Optical atomic coherence at the one-second time scale
• Improved frequency measurement of a one-dimensional optical lattice clock with a spin-polarized fermionic ${}^{87}$Sr isotope

Cited by in corpus (20)

• Sr lattice clock at 1x10^{-16} fractional uncertainty by remote optical evaluation with a Ca clock
• Quantum State Engineering and Precision Metrology using State-Insensitive Light Traps
• New Limits on Coupling of Fundamental Constants to Gravity Using ${}^{87}$Sr Optical Lattice Clocks
• Precision Test of Mass Ratio Variations with Lattice-Confined Ultracold Molecules
• Control of Interaction-Induced Dephasing of Bloch Oscillations
• Nuclear Spin Effects in Optical Lattice Clocks
• Trapping of Neutral Mercury Atoms and Prospects for Optical Lattice Clocks
• Optical Lattice Induced Light Shifts in an Yb Atomic Clock
• Alkaline-Earth-Metal Atoms as Few-Qubit Quantum Registers
• The absolute frequency of the 87Sr optical clock transition
• 86-km optical link with a resolution of 2.10-18 for RF frequency transfer
• Coherent optical phase transfer over a 32-km fiber with 1-s instability at $10^{-17}$
• An Optical Lattice Clock with Spin-polarized 87Sr Atoms
• Primary gas thermometry by means of laser-absorption spectroscopy: Determination of the Boltzmann constant
• Doppler-free spectroscopy of the 1S0-3P0 optical clock transition in laser-cooled fermionic isotopes of neutral mercury
• `Stückelberg interferometry' with ultracold molecules
• State-dependent, addressable subwavelength lattices with cold atoms
• Fourier-transform spectroscopy of Sr2 and revised ground state potential
• Spin squeezing in optical lattice clocks via lattice-based QND measurements
• Robustness of Heisenberg-limited interferometry with balanced Fock states