Coherent light scattering from a two-dimensional Mott insulator.
Coherent light scattering from a two-dimensional Mott insulator.
复制标题
二维莫特绝缘体的相干光散射。
DOI：
10.1103/physrevlett.106.215301
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发表时间：
2011
影响因子：
8.6
通讯作者：
S. Kuhr
中科院分区：
文献类型：
--
作者：
C. Weitenberg;P. Schauss;T. Fukuhara;M. Cheneau;M. Endres;I. Bloch;S. Kuhr
我们通过实验证明了二维晶格中原子莫特绝缘体的相干光散射。数百个原子的小云的远场衍射图案被成像，同时用探测光束激光冷却原子。我们通过简单的解析模型描述衍射峰的位置和峰参数的缩放。与布拉格散射相反，来自单个平面的散射对于任何入射角都会产生衍射峰。我们通过人工创建一维反铁磁序作为密度波并观察额外衍射峰的出现，证明了通过光散射检测自旋相关性的可行性。
We experimentally demonstrate coherent light scattering from an atomic Mott insulator in a two-dimensional lattice. The far-field diffraction pattern of small clouds of a few hundred atoms was imaged while simultaneously laser cooling the atoms with the probe beams. We describe the position of the diffraction peaks and the scaling of the peak parameters by a simple analytic model. In contrast to Bragg scattering, scattering from a single plane yields diffraction peaks for any incidence angle. We demonstrate the feasibility of detecting spin correlations via light scattering by artificially creating a one-dimensional antiferromagnetic order as a density wave and observing the appearance of additional diffraction peaks.