Energy-Resolved Information Scrambling in Energy-Space Lattices
Energy-Resolved Information Scrambling in Energy-Space Lattices
复制标题
能量空间晶格中的能量分辨信息置乱
DOI：
10.1103/physrevlett.126.070601
复制
发表时间：
2021
影响因子：
8.6
通讯作者：
Thomas, J. E.
中科院分区：
文献类型：
--
作者：
Pegahan, S.;Arakelyan, I.;Thomas, J. E.
弱相互作用费米气体模拟了能量空间中的自旋晶格，为研究大型多体量子系统中的信息扩散和自旋相干提供了丰富的平台。我们证明了集体自旋矢量可以根据测量的自旋密度确定为能量的函数，从而实现了一般的能量空间解析协议。我们测量了该系统中的无序关联函数，并观察到了多体相干的能量依赖性。
Weakly interacting Fermi gases simulate spin lattices in energy space, offering a rich platform for investigating information spreading and spin coherence in a large many-body quantum system. We show that the collective spin vector can be determined as a function of energy from the measured spin density, enabling general energy-space resolved protocols. We measure an out-of-time-order correlation function in this system and observe the energy dependence of the many-body coherence.