Formation of ultracold ${}^{39}$K${}^{133}$Cs Feshbach molecules

Charly Beulenkamp, Krzysztof P. Zamarski, Robert C. Bird +4

We report the creation of an ultracold gas of bosonic ${}^{39}$K${}^{133}$Cs molecules. We first demonstrate a cooling strategy relying on sympathetic cooling of ${}^{133}$Cs to produce…