We successfully demonstrate a quantum gas microscopy using the Faraday effect which has an inherently non-destructive nature. The observed Faraday rotation angle reaches 3.0(2) degrees for a single atom. We reveal the non-destructive feature of this Faraday imaging method by comparing the detuning dependence of the Faraday signal strength with that of the photon scattering rate. We determine the atom distribution with deconvolution analysis. We also demonstrate the absorption and the dark field Faraday imaging, and reveal the different shapes of the point spread functions for these methods, which are fully explained by theoretical analysis. Our result is an important first step towards an ultimate quantum non-demolition site-resolved imaging and furthermore opens up the possibilities for quantum feedback control of a quantum many-body system with a single-site resolution.
Spin-resolved microscopy of $^{87}$Sr SU($N$) Fermi-Hubbard systems
ICFO - Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology（光子科学研究所，巴塞罗那科学与技术研究院）；Departament de Física Quàntica i Astrofísica, Facultat de Física, Universitat de Barcelona（巴塞罗那大学物理学院量子物理与天体物理学系）；ICREA（加泰罗尼亚高级研究学院）
Institut für Experimentalphysik, Universität Innsbruck（因斯布鲁克大学实验物理研究所）；Universal Quantum Deutschland GmbH（德国通用量子有限公司）；Institute for Quantum Physics, University of Hamburg（汉堡大学量子物理研究所）；Department of Physics, TU Dortmund University（多特蒙德工业大学物理系）
Even-Odd Correlation Functions on an Optical Lattice
我们研究了在量子气体显微镜中出现的许多不同的体态，例如在哈佛大学开发的[Bakr et al. Nature 462，74（2009）]，其中原子数的位点分辨奇偶性被成像。我们计算的显微镜图像的空间相关性，对应于关联函数的奇偶性的原子数在每个网站。我们产生一些著名的模型：非相互作用玻色子，大U玻色-哈伯德模型，和非相互作用费米子的分析结果。我们发现，这些宇称相关性往往不如密度-密度相关性强，但它们携带类似的信息。
