论文标题
从晶格捕获的偶极旋转3原子的集体自旋波动中测量相关性
Measuring correlations from the collective spin fluctuations of a large ensemble of lattice-trapped dipolar spin-3 atoms
论文作者
论文摘要
我们执行集体自旋测量，以研究$ \ of \ of110^4 $ spin $ s = 3 $铬原子之间的两体相关性的堆积。旋转通过远距离和各向异性偶极相互作用相互作用。从按标准量子极限测量的总磁化的波动，我们估计与磁化相关的连接成对相关性的动力学生长。相关性的量子性质通过与短期和长时间扩展以及数值模拟进行比较来评估。我们的工作表明，测量旋转种群的波动提供了表征量子多体系统相关性的新方法，以$ s> 1/2 $旋转
We perform collective spin measurements to study the buildup of two-body correlations between $\approx10^4$ spin $s=3$ chromium atoms pinned in a 3D optical lattice. The spins interact via long range and anisotropic dipolar interactions. From the fluctuations of total magnetization, measured at the standard quantum limit, we estimate the dynamical growth of the connected pairwise correlations associated with magnetization. The quantum nature of the correlations is assessed by comparisons with short and long time expansions, and numerical simulations. Our work shows that measuring fluctuations of spin populations provides new ways to characterize correlations in quantum many-body systems, for $s>1/2$ spins
