Physics – Condensed Matter – Quantum Gases
Scientific paper
2012-01-20
Physics
Condensed Matter
Quantum Gases
8 pages
Scientific paper
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.
Fu Li-Bin
Wang Zheng-Dong
Zhang Dan-Wei
Zhu Shi-Liang
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