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arXiv quant-ph/0003052quant-ph
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光学偶极阱中的单原子:确定性冷原子源

Single Atoms in an Optical Dipole Trap: Towards a Deterministic Source of Cold Atoms

D. Frese, B. Ueberholz, S. Kuhr, W. Alt, D. Schrader, V. Gomer, D. Meschede

摘要:

我们描述了一个简单的实验技术,使我们能够存储一个小的和确定性的中性原子数的光偶极阱。在磁光阱中用单束聚焦的Nd:YAG激光制备所需原子数。偶极阱装载效率达到100%,存储时间约为1分钟.我们还制备了处于某种超精细态的原子,并证明了在几个中性原子水平上通过共振荧光进行状态选择性检测的可行性。测量了极化样品$4.2\pm 0.7$ s的自旋弛豫时间。可能的应用进行了简要讨论。

英文摘要:

We describe a simple experimental technique which allows us to store a small and deterministic number of neutral atoms in an optical dipole trap. The desired atom number is prepared in a magneto-optical trap overlapped with a single focused Nd:YAG laser beam. Dipole trap loading efficiency of 100 % and storage times of about one minute have been achieved. We have also prepared atoms in a certain hyperfine state and demonstrated the feasibility of a state-selective detection via resonance fluorescence at the level of a few neutral atoms. A spin relaxation time of the polarized sample of $4.2\pm 0.7$ s has been measured. Possible applications are briefly discussed.

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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