arXiv quant-ph/06011632006-01quant-ph

在透明永磁体原子芯片上捕获原子

Trapping atoms on a transparent permanent-magnet atom chip

A. Shevchenko, M. Heilio, T. Lindvall, A. Jaakkola, I. Tittonen, M. Kaivola, T. Pfau

备注：: Modifications: A) Reference I. Barb et al., Eur. Phys. JD, 35, 75 (2005) added. B)Sentence rewritten: We routinely capture more than 10^6 atoms in a micro-MOT on a magnetized pattern. C) The magnetic field strengths are now given in Teslas. D) The second sentence in the fourth paragraph has been rewritten in order to more clearly describe the geometry and purpose of the compensation coils.E) In the seventh paragraph we have rewritten the sentence about the creation of the external magnetic field for the magnetic-domain patterning. F) In the ninth paragraph, we clarify the way to shift the trap center. G) Caption of Fig. 4 changed. H) We have modified paragraph 12 to improve the description on the guiding of the trap center along a toroidal pattern. I) The last two sentences of the manuscript have been rewritten
DOI：: 10.1103/PhysRevA.73.051401

摘要：

描述了在光学透明的永磁体原子芯片上进行的原子在微观磁光阱中的囚禁实验。该芯片由沉积在电介质衬底上的硬磁铁氧体-石榴石材料制成。约束磁场由磁光技术记录在薄膜中的微型磁化图案产生。我们在传统的磁光阱（MOT）几何结构中，通过施加三对交叉的反向传播激光束，在这些结构上捕获Rb原子。我们通过几个实验证明了在创建和原位修改的捕获几何形状的概念的灵活性。

英文摘要：

We describe experiments on trapping of atoms in microscopic magneto-optical traps on an optically transparent permanent-magnet atom chip. The chip is made of magnetically hard ferrite-garnet material deposited on a dielectric substrate. The confining magnetic fields are produced by miniature magnetized patterns recorded in the film by magneto-optical techniques. We trap Rb atoms on these structures by applying three crossed pairs of counter-propagating laser beams in the conventional magneto-optical trapping (MOT) geometry. We demonstrate the flexibility of the concept in creation and in-situ modification of the trapping geometries through several experiments.

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