Quantum tunneling of spinor Bose-Einstein condensates in an optical lattice

摘要

We have studied tunneling of spinor Bose-Einstein condensate in an optical lattice. It is found that, when the system being prepared in a squeezed coherent state, there exist the quantum tunneling between lattices l and l + 1, l and l - 1, respectively. In particular, when the optical lattice is infinitely long and the spin excitations are in the long-wavelength limit, quantum tunneling disappear between lattices l and l + 1, and that l and L - 1, in this case the magnetic soliton appears.