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arXiv 1503.01828cond-mat.quant-gas
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利用磁脉冲局域自旋1玻色-爱因斯坦凝聚体的自旋动力学

Localizing spin dynamics in a spin-1 Bose-Einstein condensate via magnetic pulses

Huanbin Li, Zhengguo Pu, M. S. Chapman, Wenxian Zhang

摘要:

在平均场论的单空间模近似下,自旋为1的玻色-爱因斯坦凝聚体中原子间的自旋交换相互作用导致原子的自旋周期性演化。通过应用快速磁脉冲根据两步或四步控制协议,我们发现,分析的自旋动力学显着抑制任意的初始状态。在单模近似下进行了数值计算,以确认这些协议的有效性和鲁棒性。这种定位方法可以很容易地用于提高基于自旋-1玻色-爱因斯坦凝聚体的磁强计的灵敏度。

英文摘要:

Spin exchange interaction between atoms in a spin-1 Bose-Einstein condensate causes atomic spin evolving periodically under the single spatial mode approximation in the mean field theory. By applying fast magnetic pulses according to a two-step or a four-step control protocol, we find analytically that the spin dynamics is significantly suppressed for an arbitrary initial state. Numerical calculations under single mode approximation are carried out to confirm the validity and robustness of these protocols. This localization method can be readily utilized to improve the sensitivity of a magnetometer based on spin-1 Bose-Einstein condensates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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