Figure 1
Illustration: Alan Stonebraker

Figure 1: The scheme used for the production of molecules in the rovibrational ground-state of the triplet potential (for clarity the deeper singlet potential is not shown). Free atoms are first converted into weakly bound Feshbach molecules using a magnetic field ramp. Using a counterintuitive pulse sequence [15] in which laser L2 is applied before laser L1, the molecules then undergo STIRAP transfer to the rovibrational ground state. The process can then be reversed to convert the tightly bound molecules back into free atoms for detection.