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arXiv quant-ph/0608089quant-ph
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利用受激拉曼绝热通道实现囚禁离子的有效相干内态转移

Efficient coherent internal state transfer in trapped ions using Stimulated Raman Adiabatic Passage

Jens L. Sørensen, Ditte Møller, Theis Iversen, Jakob B. Thomsen, Frank Jensen, Peter Staanum, Dirk Voigt, Michael Drewsen

摘要:

我们实验证明了如何受激拉曼绝热通道(STIRAP)的过程中可以利用有效的相干内部状态转移在单个捕获和激光冷却的$^{40}$钙$^+$离子。通过荧光测量检测从D $_{3/2}$到D $_{5/2}$状态的转移,揭示未转移到D $_{5/2}$状态的群体。在一个装置中,已获得了95%的相干布居转移效率的水平,允许在一个字符串中的单个离子的内部状态检测。

英文摘要:

We demonstrate experimentally how the process of Stimulated Raman Adiabatic Passage (STIRAP) can be utilized for efficient coherent internal state transfer in single trapped and laser-cooled $^{40}$Ca$^+$ ions. The transfer from the D$_{3/2}$ to the D$_{5/2}$ state, is detected by a fluorescence measurement revealing the population not transfered to the D$_{5/2}$ state. A coherent population transfer efficiency at the level of 95 % in a setup allowing for the internal state detection of individual ions in a string has been obtained.

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