Despite the lockdown, some trapping in the lab this week. First single-ion experiments this year, after the 405 nm laser broke in January. Not much going on in these videos, but at least it's a single ion!
![](http://www.anderswallin.net/wp-content/uploads/2020/04/2020-04-02_run7_Figure_1-1024x583.png)
First clock-transition linewidth measurement give about a 200 Hz wide transition, so around 5e-13 fractionally.