Nonlinear Landau-Zener tunneling of Bose-Einstein condensate in a spatially magnetic modulated trap
Nonlinear Landau-Zener tunneling of Bose-Einstein condensate in a spatially magnetic modulated trap
复制标题
空间磁调制陷阱中玻色-爱因斯坦凝聚体的非线性朗道-齐纳隧道效应
DOI:
10.1134/s1054660x09040239
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发表时间:
2009-04
期刊:
影响因子:
1.2
通讯作者:
Fu, Li-Bin
中科院分区:
文献类型:
--
作者:
Liu, Jie;Yang, Li-Yun;Fu, Li-Bin
We study tunneling of a Bose-Einstein condensates confined in a effective double-well potential (a single well with a spatially magnetic modulated scattering length, actually), called pseudo double-well trap, in which the interaction of atoms characterized by the s-wave scattering length as can be widely tuned with a magnetic-field Feshbach resonance. As a result, corresponding to different nonlinear parameters, the energy levels of the nonlinear Schrödinger equation can have complex structures in their dependence on the bias between the wells. We discuss the emergence of looped levels, which lead to a breakdown of adiabaticity that the Landau-Zener transition probability does not vanish even in the adiabatic limit. Moreover, we also find that the Landau-Zener tunneling in the pseudo trap show many striking properties distinguished from that of the real trap model (where the barrier is created by the external potential). Possible experimental observation in an opticallyinduced photonic lattices in a photorefractive material is suggested.
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DOI:
--
发表时间:
2003-03
期刊:
--
影响因子:
--
作者:
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通讯作者:
Y. Kivshar;G. Agrawal
影响因子:
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作者:
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Niu, Q
DOI:
--
发表时间:
1995-07
期刊:
--
影响因子:
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作者:
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通讯作者:
J. Joannopoulos;Steven G. Johnson;J. Winn;R. Meade
影响因子:
2.6
作者:
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