Phase diagram and spin mixing dynamics in spinor condensates with a microwave dressing field.
Phase diagram and spin mixing dynamics in spinor condensates with a microwave dressing field.
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微波选矿场中旋量凝聚物的相图和自旋混合动力学
DOI：
10.1038/srep14464
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发表时间：
2015-09-25
影响因子：
4.6
通讯作者：
Hu ZD
中科院分区：
文献类型：
--
作者：
Huang Y;Zhong W;Sun Z;Hu ZD
在最近的一次实验中，已经实现了浸入微波修整场中的旋量凝聚体，这种凝聚体可以获得净二次塞曼效应的负值和正值。在这篇报告中，我们研究了具有微波修饰场的旋量凝聚体的基态性质，这使得我们能够获得二次方塞曼能量的正负值。对于铁磁和反铁磁相互作用，通过改变磁化强度和净二次塞曼能量，基态呈现出三个不同的相。我们研究了基态的原子序数涨落，发现超精细态在不同的相中呈现超泊松态和亚泊松态分布。我们还讨论了它的动力学性质，结果表明，分离线与磁化强度有显著的关系。
Spinor condensates immersed in a microwave dressing field, which access both negative and positive values of the net quadratic Zeeman effect, have been realized in a recent experiment. In this report, we study the ground state properties of a spinor condensate with a microwave dressing field which enables us to access both negative and positive values of quadratic Zeeman energy. The ground state exhibits three different phases by varying the magnetization and the net quadratic Zeeman energy for both cases of ferromagnetic and antiferromagnetic interactions. We investigate the atomic-number fluctuations of the ground state and show that the hyperfine state displays super-Poissonian and sub-Poissonian distributions in the different phases. We also discuss the dynamical properties and show that the separatrix has a remarkable relation to the magnetization.