Efficient conversion of ultracold Feshbach-resonance-related polar molecules into ultracold ground state (X-1 Sigma(+) v=0, J=0) molecules

摘要

It is proposed that bound states of ultracold heteronuclear alkali dimer molecules derived from Feshbach resonances can be efficiently converted into true ground state ultracold molecules (X(1)Sigma(+) v = 0, J = 0) by a stimulated Raman process via b (3)Pi similar to A(1)Sigma(+) mixed levels. This is illustrated and discussed for five of the ten polar heteronuclear alkali dimers: LiNa. NaK, NaRb, RbCs, and especially KRb.