Two-dimensional array of microtraps with atomic shift register on a chip
Two-dimensional array of microtraps with atomic shift register on a chip
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DOI：
10.1088/1367-2630/11/2/023021
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发表时间：
2008-03
影响因子：
3.3
通讯作者：
Shannon Whitlock;R. Gerritsma;T. Fernholz;R. Spreeuw
中科院分区：
文献类型：
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作者：
Shannon Whitlock;R. Gerritsma;T. Fernholz;R. Spreeuw
囚禁原子阵列是开发包含大量物理量子比特的寄存器的理想起点，用于存储和处理量子信息。一种非常有希望的方法涉及在被称为原子芯片的微型制造设备上产生中性原子陷阱，因为几乎任意的陷阱配置可以在坚固和紧凑的封装中实现。然而，到目前为止，原子芯片实验主要集中在包含单个或仅有几个单独陷阱的小系统上。在这里，我们报道了用简单的磁膜原子芯片制备的捕获的超冷原子云的二维阵列的实验。我们能够将原子加载到数百个严格限制和光学分辨的阵列位置中。然后我们冷却单个原子云，使之与量子简并所需的临界温度平行。利用原子芯片作为原子移位寄存器，原子在芯片表面穿梭，并使用聚焦激光快速清空单个陷阱来实现对原子的局部操纵。
Arrays of trapped atoms are the ideal starting points for developing registers comprising large numbers of physical qubits for storing and processing quantum information. One very promising approach involves neutral atom traps produced on microfabricated devices known as atom chips, as almost arbitrary trap configurations can be realized in a robust and compact package. Until now, however, atom chip experiments have focused on small systems incorporating single or only a few individual traps. Here, we report experiments on a two-dimensional array of trapped ultracold atom clouds prepared using a simple magnetic-film atom chip. We are able to load atoms into hundreds of tightly confining and optically resolved array sites. We then cool the individual atom clouds in parallel to the critical temperature required for quantum degeneracy. Atoms are shuttled across the chip surface utilizing the atom chip as an atomic shift register and local manipulation of atoms is implemented using a focused laser to rapidly empty individual traps.