Two-mode Bose-Einstein condensate in a high-frequency driving field that directly couples the two modes

Details Two-mode Bose-Einstein condensate in a high-frequency driving field that directly couples the two modes Two-mode Bose-Einstein condensate in a high-frequency driving field that directly couples the two modes

2007-11-28

arxiv.org/abs/0711.4445v2

Phys. Rev. A 77, 053607 (2008)

Physics

Quantum Physics

5 pages, 3 figures, revised version, to appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.77.053607

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.

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