We consider a trapped multicomponent atomic Bose-Einstein condensate, concentrating specifically on condensates in the hyperfine ground state [Formula Presented] where spin exchange collisions result in a transfer of population between [Formula Presented] and [Formula Presented] internal states. Drawing an analogy with the optical situation, we show that this system can be regarded as a matter-wave analog of optical multiwave mixing. This opens up the way to realize matter-wave phase conjugation, whereby an incident atomic beam can be “time reversed.” In addition, matter-wave phase conjugation also offers novel diagnostic tools to study the coherence properties of condensates, as well as to measure the relative scattering lengths of hyperfine sublevels.
|Number of pages
|Physical Review A - Atomic, Molecular, and Optical Physics
|Published - 1999
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics