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Suppression of Chaos in a Bose-Einstein Condensate Loaded into a Moving Optical Superlattice Potential |
LUO Xiao-Bing1, XIA Xiu-Wen1, ZHANG Xiao-Fei2,3 |
| 1Department of Physics, Jinggangshan University, Ji'an 3430092College of Science, Honghe University, Mengzi 6611003Institute of Physics, Chinese Academy of Sciences, Beijing 100190 |
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LUO Xiao-Bing, XIA Xiu-Wen, ZHANG Xiao-Fei 2010 Chin. Phys. Lett. 27 040302 |
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Abstract We have shown that the application of modulating the secondary lattice is an efficient route to suppressing the generation of chaotic traveling waves of a Bose-Einstein Condensate with attractive interatomic interaction loaded into a moving optical superlattice consisting of two lattices. With the Melnikov method, we obtain the optimal value of the relative phase between the two lattice harmonics for the control of chaos. We also find that the regularization route as the potential depth of the secondary lattice is varied and fairly rich, including the period-doubling bifurcations.
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| Keywords:
03.75.Lm
05.45.Gg
03.75.Kk
05.45.Yv
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Received: 08 January 2010
Published: 27 March 2010
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| PACS: |
03.75.Lm
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(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
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05.45.Gg
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(Control of chaos, applications of chaos)
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03.75.Kk
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(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
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05.45.Yv
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(Solitons)
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