二维光晶格中单点可寻址性的实验验证
Experimental demonstration of single-site addressability in a two-dimensional optical lattice
摘要：
我们证明了在一个二维光晶格与600 nm的晶格间距单网站寻址能力。在晶格势中加载玻色-爱因斯坦凝聚体后，我们使用聚焦电子束从选定的位置去除原子。随后通过扫描电子显微镜对图案化结构成像。这种技术使我们能够创造任意模式的介观原子系综。我们发现，图案是非常稳定的隧道扩散。这种微工程量子气体在量子模拟、量子光学和中性原子的量子信息处理中是一种多用途的资源。
英文摘要：
We demonstrate single site addressability in a two-dimensional optical lattice with 600 nm lattice spacing. After loading a Bose-Einstein condensate in the lattice potential we use a focused electron beam to remove atoms from selected sites. The patterned structure is subsequently imaged by means of scanning electron microscopy. This technique allows us to create arbitrary patterns of mesoscopic atomic ensembles. We find that the patterns are remarkably stable against tunneling diffusion. Such micro-engineered quantum gases are a versatile resource for applications in quantum simulation, quantum optics and quantum information processing with neutral atoms.
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