Macroscopic quantum coherence in spinor condensates confined in an anisotropic potential
Macroscopic quantum coherence in spinor condensates confined in an anisotropic potential
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限制在各向异性势中的旋量凝聚的宏观量子相干性
DOI：
10.1103/physreva.86.043625
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发表时间：
2012-10-25
影响因子：
2.9
通讯作者：
Yi, Su
中科院分区：
文献类型：
--
作者：
Huang, Yixiao;Zhang, Yunbo;Yi, Su
研究了各向异性势场中旋量凝聚体的宏观量子自旋相干性。在单模近似下，我们证明了自旋为1的Rb凝聚体可以用双轴量子磁体来模拟。双轴各向异性的一个直接后果是，隧穿分裂振荡作为沿沿着难轴施加的外部磁场的函数。我们还提出了一个实验方案来检测的振荡行为的隧道分裂采用朗道-齐纳隧道。
We investigate the macroscopic quantum spin coherence of a spinor condensate confined in an anisotropic potential. Under the single-mode approximation, we show that a spin-1 Rb condensate can be modeled as a biaxial quantum magnet. A direct consequence of the biaxial anisotropy is that the tunneling splitting oscillates as a function of the external magnetic field applied along the hard axis. We also propose an experimental scheme to detect the oscillatory behavior of the tunneling splitting by employing the Landau-Zener tunneling.