Optical atomic clocks

AD Ludlow, MM Boyd, J Ye, E Peik, PO Schmidt - Reviews of Modern Physics, 2015 - APS
Optical atomic clocks represent the state of the art in the frontier of modern measurement
science. In this article a detailed review on the development of optical atomic clocks that are …

Quantum state engineering and precision metrology using state-insensitive light traps

J Ye, HJ Kimble, H Katori - science, 2008 - science.org
Precision metrology and quantum measurement often demand that matter be prepared in
well-defined quantum states for both internal and external degrees of freedom. Laser-cooled …

Resolving the gravitational redshift across a millimetre-scale atomic sample

T Bothwell, CJ Kennedy, A Aeppli, D Kedar… - Nature, 2022 - nature.com
Einstein's theory of general relativity states that clocks at different gravitational potentials tick
at different rates relative to lab coordinates—an effect known as the gravitational redshift. As …

Clock with Systematic Uncertainty

A Aeppli, K Kim, W Warfield, MS Safronova, J Ye - Physical Review Letters, 2024 - APS
We report an optical lattice clock with a total systematic uncertainty of 8.1× 10-19 in fractional
frequency units, representing the lowest uncertainty of any clock to date. The clock relies on …

A Fermi-degenerate three-dimensional optical lattice clock

SL Campbell, RB Hutson, GE Marti, A Goban… - Science, 2017 - science.org
Strontium optical lattice clocks have the potential to simultaneously interrogate millions of
atoms with a high spectroscopic quality factor of 4× 1017. Previously, atomic interactions …