June, 8 (2007) at 4pm

Viacheslav Yukalov
Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna

An optical lattice is considered, each site of which contains a large number of Bose atoms forming local Bose-Einstein condensates. Such a system is a kind of the spatially fragmented condensate. The lattice as a whole is subject to the action of an external modulating field generating nonequilibrium nonground-state condensates. When the frequency of the modulating field is in resonance with the transition frequency between two different topological coherent modes, each trapping site becomes an analog of a finite-level resonant atom. Similarly to the case of atoms in an electromagnetic resonant field, one can create entanglement between fragmented atomic condensates subject to a common resonant modulating field generating higher coherent modes. A method is suggested for regulating entanglement production in such a system of fragmented multimode Bose-Einstein condensates coupled through a common resonant modulating field.