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
Horak, P., & Barnett, S. M. (1999). Creation of coherence in Bose-Einstein condensates by atom detection. Journal of Physics B: Atomic, Molecular and Optical Physics, 32, 3421-3436. https://doi.org/10.1088/0953-4075/32/14/312