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arXiv · 1201.4306

Josephson dynamics of a spin-orbit coupled Bose-Einstein condensate in a double well potential

Dan-Wei Zhang·Li-Bin Fu·Z. D. Wang·Shi-Liang Zhu
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Abstract

We investigate the quantum dynamics of an experimentally realized spin-orbit coupled Bose-Einstein condensate in a double well potential. The spin-orbit coupling can significantly enhance the atomic inter-well tunneling. We find the coexistence of internal and external Josephson effects in the system, which are moreover inherently coupled in a complicated form even in the absence of interatomic interactions. Moreover, we show that the spin-dependent tunneling between two wells can induce a net atomic spin current referred as spin Josephson effects. Such novel spin Josephson effects can be observable for realistically experimental conditions.

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Dan-Wei Zhang, Li-Bin Fu, Z. D. Wang, Shi-Liang Zhu. 2012-01-20. Josephson dynamics of a spin-orbit coupled Bose-Einstein condensate in a double well potential. https://doi.org/10.1103/physreva.85.043609

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