Conveners
Optical Ion Clocks II
- Tingrei Tan
We will report on absolute E3 frequency measurements and E3/E2 optical frequency ratio measurements in $^{171}$Yb$^+$, local $^{171}$Yb$^+$/ $^{87}$Sr clock frequency ratios, related uncertainty budgets, and improvements in automation and robust operation of the $^{171}$Yb$^+$ clock system at NPL. We will also show how these measurement results have been used to constrain temporal variation of...
Over the past decades, atoms are trapped and laser cooled to near zero temperature, minimizing the motional effects in spectroscopy. Internal states of atoms can be coherently manipulated and pre-pared in pure quantum states, including entangled states that are impactful in quantum information processing, sensing, and metrology. This talk will describe the effort of the Ion Storage group at...
Here our progress on the Ca+ ion optical clocks for the last few years will be reported, including both the laboratory clocks and the transportable clock.
First of all, the clock stability is greatly improved, with long term stability reaches the E-18 level; recently with a low E-16 level stability clock laser, the clock stability has been improved to ~ 1E-15/√τ, about another factor of 2...
