Characterisation of the dynamical quantum state of a zero temperature Bose-Einstein condensate
arXiv:cond-mat/0302066 · doi:10.1016/S0375-9601(02)00732-6
Abstract
We describe the quantum state of a Bose-Einstein condensate at zero temperature. By evaluating the Q-function we show that the ground state of Bose-Einstein condensate under the Hartree approximation is squeezed. We find that multimode Schroedinger cat states are generated as the condensate evolves in a ballistic expansion.
13 pages, 6 figures