Time-dependent self-trapping of Bose-Einstein Condensates in a double-well potential

Details Time-dependent self-trapping of Bose-Einstein Condensates in a double-well potential Time-dependent self-trapping of Bose-Einstein Condensates in a double-well potential

2010-09-19

arxiv.org/abs/1009.3666v2

Phys. Rev. A 82, 062105 (2010)

Physics

Condensed Matter

Quantum Gases

6 pages, 6 figures

Scientific paper

Based on the mean-field approximation and the phase space analysis, we discuss the dynamics of Bose-Einstein condensates in a double-well potential. By applying a periodic modulation to the coupling between the condensates, we find the condensates can be trapped in the time-dependent eigenstates of the effective Hamiltonian, we refer to this effect as time-dependent self-trapping of BECs. A comparison of this self-trapping with the adiabatic evolution is made, finding that the adiabatic evolution beyond the traditional(linear) adiabatic condition can be achieved in BECs by manipulating the nonlinearity and the ratio of the level bias to the coupling constant. The fixed points for the system are calculated and discussed.

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