Bose-stimulated Raman adiabatic passage in photoassociation

We analyze coherent two-color photoassociation of a Bose-Einstein condensat e, focusing on stimulated Raman adiabatic passage (STIRAP) in free-bound-bo und transitions from atoms to molecules. This problem raises an interest be cause STIRAP has been predicted to be absent in the nondegenerate case [Jav anainen and Mackle. Phys. Rev. A 58, R789 (1998)]. Nevertheless, we find th at Bose stimulation enhances. the free-bound dipole matrix element for an a tomic condensate, and photoassociative STIRAP turns out to be a viable mech anism for converting an atomic condensate to a molecular condensate with ne ar-unit efficiency.