Quarto

Nathan Lemke and his students at the Bethel University AMO lab locked a laser to a two-photon transition of rubidium-85. They used the qNimble Quarto as a modulation source, lock-in amplifier, and PI loop filter servo to effect a Pound Drever Hall (PDH) type lock.

Shankar Menon of the University of Chicago won a qNimble Quarto!