We investigate the creation of a relative phase between two Bose-Einstein condensates, initially in number states, by detection of atoms and show how the system approaches a coherent state. Two very distinct time scales are found: one for the creation of the interference is of the order of the detection time for a few single atoms and another, for the preparation of coherent states, is of the order of the detection time for a significant fraction of the total number of atoms. Approximate analytic solutions are derived and compared with exact numerical results.
|Number of pages||15|
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|Publication status||Published - 1999|
- Bose-Einstein condensates
- atomic physics