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arXiv 1001.1035cond-mat.quant-gas
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自旋为1的玻色-爱因斯坦凝聚体中自旋混合动力学的局域化

Localization of spin mixing dynamics in a spin-1 Bose-Einstein condensate

Wenxian Zhang, Bo Sun, M. S. Chapman, L. You

摘要:

我们提出通过自旋交换相互作用的时间调制来局域自旋1玻色-爱因斯坦凝聚体中的自旋混合动力学,这种时间调制可以用光学费什巴赫共振来调谐。采用相干控制的方法,我们证明了$^{87}$ Rb原子的铁磁相互作用凝聚体中自旋混合动力学的局域化/冻结,以及内禀动力学不稳定性和自发自旋畴形成的抑制.这项工作指出了一个有前途的计划,调查弱磁自旋偶极相互作用,这通常是掩盖了更占主导地位的自旋交换相互作用。

英文摘要:

We propose to localize spin mixing dynamics in a spin-1 Bose-Einstein condensate by a temporal modulation of spin exchange interaction, which is tunable with optical Feshbach resonance. Adopting techniques from coherent control, we demonstrate the localization/freezing of spin mixing dynamics, and the suppression of the intrinsic dynamic instability and spontaneous spin domain formation in a ferromagnetically interacting condensate of $^{87}$Rb atoms. This work points to a promising scheme for investigating the weak magnetic spin dipole interaction, which is usually masked by the more dominant spin exchange interaction.

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