Two-mode Bose-Einstein condensate in a high-frequency driving field that directly couples the two modes
arXiv:0711.4445 · doi:10.1103/PhysRevA.77.053607
Abstract
A two-mode Bose-Einstein condensate coupled by a high-frequency modulation field is found to display rich features. An effective stationary Hamiltonian approach reveals the emergence of additional degenerate eigenstates as well as new topological structures of the spectrum. Possible applications, such as the suppression of nonlinear Landau-Zener tunneling, are discussed. An interesting phenomenon, which we call "deterministic symmetry-breaking trapping" associated with separatrix crossing, is also found in an adiabatic process.
5 pages, 3 figures, revised version, to appear in Phys. Rev. A
References in corpus (4)
- Adiabatic Theory of Nonlinear Evolution of Quantum States
- Landau-Zener transitions in qubits controlled by electromagnetic fields
- Coherent control of mesoscopic tunneling in a Bose-Einstein condensate
- Universality in nonadiabatic behaviour of classical actions in nonlinear models with separatrix crossings