Harmonic trap resonance enhanced synthetic atomic spin-orbit coupling.
Harmonic trap resonance enhanced synthetic atomic spin-orbit coupling.
复制标题
谐波陷阱共振增强合成原子自旋轨道耦合
DOI：
10.1038/srep46756
复制
发表时间：
2017-04-27
影响因子：
4.6
通讯作者：
You L
中科院分区：
文献类型：
--
作者：
Wu LN;Luo XY;Xu ZF;Ueda M;Wang R;You L
自旋轨道耦合（SOC）在凝聚态物理中许多奇特而有趣的现象中起着至关重要的作用。在基于中性原子的量子模拟中，合成SOC是关键的使能元素。目前所实现的SOC的强度受到各种原因或约束的限制。本文报道了用梯度磁场（GMF）在谐波阱中为原子合成的可调谐SOC。当GMF被调制到谐波阱附近时，与自由空间情况相比，可以观察到近10倍的增强。提出了一个理论，很好地解释了实验结果。我们的工作为如何利用谐波陷阱共振调节GMF合成的原子SOC的强度提供了清晰的物理见解和分析理解。
Spin-orbit coupling (SOC) plays an essential role in many exotic and interesting phenomena in condensed matter physics. In neutral-atom-based quantum simulations, synthetic SOC constitutes a key enabling element. The strength of SOC realized so far is limited by various reasons or constraints. This work reports tunable SOC synthesized with a gradient magnetic field (GMF) for atoms in a harmonic trap. Nearly ten-fold enhancement is observed when the GMF is modulated near the harmonic-trap resonance in comparison with the free-space situation. A theory is developed that well explains the experimental results. Our work offers a clear physical insight into and analytical understanding of how to tune the strength of atomic SOC synthesized with GMF using harmonic trap resonance.