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Controllable Persistent Atom Current of Bose-Einstein Condensates in an Optical Lattice Ring

G. -P. Zheng·J. -Q. Liang
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Abstract

In this paper the macroscopic quantum states of Bose-Einstein condensates in optical lattices is studied by solving the periodic Gross-Pitaevskii equation in one-dimensional geometry. It is shown that an exact solution seen to be a travelling wave of excited macroscopic quantum states resultes in a persistent atom current which can be controlled by adjusting of the barrier height of the optical periodic potential. A critical condition to generate the travelling wave is demonstrated and we moreover propose a practical experiment to realize the persistent atom current in a toroidal atom waveguide.

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G. -P. Zheng, J. -Q. Liang. 2005-06-05. Controllable Persistent Atom Current of Bose-Einstein Condensates in an Optical Lattice Ring. https://doi.org/10.1088/0253-6102%2F43%2F5%2F012

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