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arXiv 0905.2207physics.atom-ph
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原子芯片上的光晶格

An optical lattice on an atom chip

D. Gallego, S. Hofferberth, T. Schumm, P. Krüger, J. Schmiedmayer

摘要:

光偶极阱和原子芯片是对中性原子进行量子操纵的两种非常有力的工具。我们证明,这两种方法可以结合起来,通过创建一个原子芯片上的光晶格潜力。利用原子芯片表面作为高质量的反射镜,对红失谐激光束进行逆反射,产生纯光学扁形陷阱的垂直阵列。我们将热原子从芯片加载到晶格中,并观察到冷却到二维区域,其中热能小于横向激发的量子。利用芯片产生的玻色-爱因斯坦凝聚体,我们证明了晶格中的相干布洛赫振荡。

英文摘要:

Optical dipole traps and atom chips are two very powerful tools for the quantum manipulation of neutral atoms. We demonstrate that both methods can be combined by creating an optical lattice potential on an atom chip. A red-detuned laser beam is retro-reflected using the atom chip surface as a high-quality mirror, generating a vertical array of purely optical oblate traps. We load thermal atoms from the chip into the lattice and observe cooling into the two-dimensional regime where the thermal energy is smaller than a quantum of transverse excitation. Using a chip-generated Bose-Einstein condensate, we demonstrate coherent Bloch oscillations in the lattice.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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